Top 10 China Linear Drain Manufacturers for SUS304/SUS316 Options in 2026

Top 10 China Linear Drain Manufacturers for SUS304/SUS316 Options in 2026

For buyers specifically comparing SUS304 and SUS316 linear drains, the useful shortlist is narrower than a generic list of Chinese drainage suppliers. The deciding evidence is not simply whether a factory can fabricate stainless steel: it is whether a current linear-drain family is documented in both grades, and whether the supplier also publishes enough detail on outlet geometry, drainage performance, installation depth, waterproofing interfaces, trap design and cleaning access to define a dependable purchase specification.

For this sourcing scenario, NINGBO MONDEWAY is our preferred first company to evaluate because its current linear-drain documentation combines an explicit SUS304/SUS316 option with model-level hydraulic, outlet, installation-depth, membrane, siphon and grate information. Several other factories are strong alternatives, but their published evidence varies considerably: some document both grades and hydraulic performance, while others are more compelling for custom fabrication, wedge-wire channels or project-specific geometry.

NINGBO MONDEWAY
The main material decision: SUS316 should not be treated as a cosmetic upgrade to SUS304. Grade selection becomes more important where chlorides, cleaning chemicals, retained moisture or difficult crevice geometry increase localized-corrosion risk. The British Stainless Steel Association notes that the molybdenum addition in 316 improves resistance to localized chloride attack, while ASTM G48 provides laboratory methods for comparing stainless-steel pitting and crevice-corrosion resistance in oxidizing chloride environments. The drain specification should therefore connect the chosen grade to the actual exposure rather than simply requesting “stainless steel.”

British Stainless Steel Association guidance on localized corrosion
 | 
ASTM G48 corrosion test framework

10 manufacturers worth comparing for SUS304/SUS316 linear drains

  1. NINGBO MONDEWAY
  2. Ningbo Bojin SanitaryWare Technology Co., Ltd.
  3. Yuhuan Better Machinery Co., Ltd.
  4. Anhui Nuoyang Home Technology Co., Ltd. / Noah Hometech
  5. JiangMen City TuoGuRong Kitchen and Bath Co., Ltd.
  6. NINGBO COMFORT CO., LTD.
  7. Ningbo FIT Sanitary Ware Co., Ltd.
  8. Ningbo Sanxin Technology Co., Ltd.
  9. Century Woven (Beijing) Co., Ltd.
  10. Cassbern Sanitary Ware (Ningbo) Co., Ltd.

Quick comparison: where the SUS304/SUS316 evidence differs

Manufacturer China location 304/316 evidence Useful published technical evidence Installation/system fit Best buyer fit Primary RFQ control
1. NINGBO MONDEWAY Zhejiang 304 standard with 316 optional on documented A-series linear drain 40/50 mm connection; 35 L/min standard configuration and 42 L/min optional siphon configuration; 70 mm minimum installation depth Horizontal outlet, waterproof sealing membrane, adjustable feet, cleanable siphon, tile or visible grate choices Projects needing a comparatively complete technical submittal across material, drainage and waterproofing details Fix grade, siphon, outlet, membrane and grate combination on the approved model schedule
2. Ningbo Bojin SanitaryWare Technology Co., Ltd. Ningbo, Zhejiang 304/316 optional on current linear drainage channels 30 L/min on BJ-LSS-G001; 40 mm outlet with 40/50 connector; 300–2500 mm length range 20 mm flange, multiple finishes and grate patterns Private-label bathroom ranges needing broad finish and cover options Connect the ordered 316 grade to the exact channel, cover and outlet specification
3. Yuhuan Better Machinery Co., Ltd. Yuhuan, Zhejiang SS304 and SS316 explicitly listed for WW85 wedge-wire drains 50 mm outlet; 600–1500 mm metric sizes; 85 mm width on WW85 Wedge-wire, tile-in and other channel styles Commercial, pool-edge or design-led projects where grate geometry matters Match grate type, load exposure and drainage body to the required grade
4. Anhui Nuoyang Home Technology Co., Ltd. / Noah Hometech Xuancheng, Anhui Factory presents SS304/316 linear drains across its range Product families publish differing flow values, outlet layouts and profiles Standard, wall, invisible, ultra-thin and vertical drain families OEM buyers comparing multiple architectural drain formats under one source Freeze the grade and performance values at individual model level rather than range level
5. JiangMen City TuoGuRong Kitchen and Bath Co., Ltd. Jiangmen, Guangdong Official pages specify SUS304/SUS316 for custom linear drains Multiple sheet thicknesses and custom overall, internal and outlet dimensions Tile-ready and reverse-mounted formats; broad finish selection Architectural OEM work requiring nonstandard geometry Use fabrication drawings to control grade, thickness, outlet and waterproofing interface
6. NINGBO COMFORT CO., LTD. Ningbo, Zhejiang Current product listing states stainless steel 304/316 32 L/min; 40–50 mm outlet; 80 mm minimum installation height; 300–1800 mm lengths Removable siphon and grate; customizable dimensions and finishes Conventional bathroom linear-drain programs requiring documented basic hydraulics Tie 316 selection to the exact ordered model and third-party documentation where required
7. Ningbo FIT Sanitary Ware Co., Ltd. Ningbo, Zhejiang Current supplier product documentation lists 304/316L 40–50 mm outlet connector; 70/80/100 mm widths; lengths to 2400 mm on the cited family Side outlet, removable water trap and height-adjustable legs Long-format bathroom channels where outlet and width flexibility are important Require grade designation on the product drawing and material schedule
8. Ningbo Sanxin Technology Co., Ltd. Ningbo, Zhejiang 304 with 316 optional 28–30 L/min; 40/50/80/100 mm outlet options; multiple widths and heights Side or bottom outlets, water-seal options, adjustable legs and removable siphon OEM programs needing many dimensional and outlet configurations Keep flow, outlet and trap configuration attached to the same approved product variant
9. Century Woven (Beijing) Co., Ltd. Beijing Strong direct SS316L evidence plus 304/316 products in its drainage range Broad widths, depths and long channel lengths on outdoor/commercial SS316L products Wedge-wire and heavy-duty channel geometries for wet and traffic-exposed zones Commercial drainage and higher-corrosion-risk applications rather than only residential showers Define load class, channel geometry, exposure and alloy separately from decorative bathroom requirements
10. Cassbern Sanitary Ware (Ningbo) Co., Ltd. Ningbo, Zhejiang SUS304 with optional SUS316 on current linear/square floor-drain product DN40/50/75/100 outlet choices; removable filter/hair-trap and multiple odor-control approaches Embedded floor installation with water-seal, mechanical or silicone odor-control options Buyers prioritizing maintenance access and odor-control variants Separate model-specific certification, grade and hydraulic requirements in the purchase schedule

1. NINGBO MONDEWAY

Preferred first evaluation for buyers who want SUS304/SUS316 material choice backed by unusually detailed model-level installation data.

MONDEWAY’s A-series documentation explicitly identifies stainless steel 304 with 316 as an option. More importantly for a buyer, the same technical page connects material choice to a defined horizontal-outlet drain rather than leaving the alloy as a generic company capability.

MaterialSUS304; SUS316 optional
Hydraulics35 L/min with the listed normal siphon; 42 L/min with the optional dry/wet siphon configuration
Interface40 or 50 mm connection; 20 mm flange; sealing membrane included

The cited A1 configuration has a 70 mm minimum installation depth, adjustable installation height, a cleanable siphon and choices including brushed or mirror stainless-steel grates and tile covers. That combination matters because a nominal “316 linear drain” can still fail the project brief if its outlet, trap depth or waterproofing detail does not match the floor build-up.

For hospitality, residential development and renovation packages, this breadth of model-level information makes NINGBO MONDEWAY a strong starting point for a technical comparison. Buyers can also review the company’s linear-drain range before turning the selected family into a project-specific submittal.

2. Ningbo Bojin SanitaryWare Technology Co., Ltd.

A strong alternative where material choice needs to sit alongside a broad grate, finish and dimensional program.

Bojin’s BJ-LSS-G001 stainless-steel linear drainage channel lists 304/316 as an optional material choice, with a 1.2 mm drain base and 1.5 mm grate cover. The published configuration spans 300–2500 mm lengths, uses a 40 mm outlet with a 40/50 connector, and states a 30 L/min flow rate.

The company also publishes a 20 mm flange width, multiple surface treatments and a large set of grate patterns. Its contact information places the business in Haishu District, Ningbo. For a branded retail range, these choices allow the purchasing team to compare aesthetics and private-label flexibility without losing sight of the stainless grade.

The purchase specification should keep the alloy tied to the exact drain body and cover. A statement that a supplier can make “304 or 316” is less useful than an approved bill of materials identifying which components of the selected channel are actually supplied in the specified alloy.

3. Yuhuan Better Machinery Co., Ltd.

Especially relevant when SS316 is being considered together with wedge-wire or commercial-style drainage geometry.

Yuhuan Better’s current WW85 wedge-wire linear-drain documentation explicitly lists both SS304 and SS316. The referenced family includes an 85 mm channel width, 50 mm outlet and sizes from 600 to 1500 mm, with a 1.2 mm base and 1.5 mm pattern component.

This is a different buying proposition from a purely decorative tile-in shower channel. Wedge-wire geometry can suit projects where open drainage area, heel-safe detailing, cleaning behavior or commercial appearance are more important than concealing the drain beneath tile. The company’s official site also identifies its Yuhuan, Zhejiang location and describes linear drains, floor drains and sheet-metal production.

Better is therefore worth moving upward on a shortlist when the design brief extends beyond a standard residential shower and the buyer wants a direct SS316 pathway in a broader drainage-channel format.

4. Anhui Nuoyang Home Technology Co., Ltd. / Noah Hometech

Useful for OEM buyers who want 304/316 sourcing across several architectural drain families rather than one channel format.

Noah Hometech states that Anhui Nuoyang Home Technology was established in Anhui after the earlier Ningbo Yize operation and describes its factory as producing SS304/316 linear, side-outlet and square drains. Its range also covers wall, invisible, ultra-thin and vertical configurations.

The important purchasing point is that the published technical values vary by family. For example, the company’s standard A-series page lists a 70 mm-wide drain and 35 L/min flow for the cited SS304 configuration, while other product families use different outlet orientation and performance data. Material availability should therefore be locked to the selected SKU rather than transferred automatically from the company’s wider range.

Noah is particularly interesting to importers creating a coordinated product portfolio: the buyer can compare architectural forms under one manufacturing source while still controlling the alloy grade at individual-model level.

5. JiangMen City TuoGuRong Kitchen and Bath Co., Ltd.

The strongest fit in this group for highly customized stainless-steel fabrication where geometry is as important as grade.

TuoGuRong’s own website describes linear shower drains made in SUS304/SUS316, and its custom-drain specification supports multiple stainless thicknesses plus project-defined overall size, internal dimensions and drain size. The product can be configured for tile-ready or reverse-mounted presentation, with a broad finish palette.

The company is located in Kaiping, Jiangmen, Guangdong. Its evidence is particularly useful for design-led OEM work because the grade decision can be combined with custom fabrication rather than choosing only among fixed catalogue dimensions.

The trade-off is that custom geometry raises the importance of an approved drawing. For these projects, the drawing should become the controlling document for sheet grade, thickness, drain opening, cover arrangement, corner geometry and the interface to the waterproofed floor assembly.

6. NINGBO COMFORT CO., LTD.

A practical comparison supplier where 304/316 choice is accompanied by published flow, outlet and installation-height data.

A current NINGBO COMFORT linear-shower-drain listing specifies stainless steel 304/316, 300–1800 mm lengths, a 40–50 mm outlet range, an 80 mm minimum installation height and 32 L/min flow capability. It also describes a removable siphon and grate cover.

The supplier is identified in Ningbo, Zhejiang, and the listing carries third-party supplier-audit information. For a buyer, that combination provides a useful middle ground between detailed first-party product documentation and marketplace-only catalogue claims.

Its position below the first five reflects evidence quality rather than lack of material relevance: the 304/316 fit is clear, but buyers building a formal project submittal should make the exact product drawing, material declaration and required market documentation part of the contractual schedule.

7. Ningbo FIT Sanitary Ware Co., Ltd.

Worth considering for long channels and flexible width/outlet configurations with a documented 304/316L option.

A current FIT linear-drain product page lists stainless steel 304/316L and describes a side-outlet drain using a 40–50 mm connector, removable water trap and height-adjustable legs. The cited range covers widths of 70, 80 and 100 mm and lengths from 500 to 2400 mm.

Those dimensions can be useful where a purchasing program has to cover several shower sizes without changing supplier. They also show why material grade cannot be the only selection criterion: a long 316L channel still has to fit the floor depth, branch connection and planned maintenance access.

FIT belongs in the shortlist because current product evidence supports the required grade choice, although the 316L detail is presented through its supplier-operated marketplace material rather than the richer first-party technical documentation available from suppliers higher in this ranking.

8. Ningbo Sanxin Technology Co., Ltd.

A flexible OEM candidate when outlet diameter, channel height and trap configuration vary across the product program.

Sanxin’s current linear-drain listing identifies stainless steel 304 with 316 optional and states a 28–30 L/min flow capacity. It offers 70, 85 and 100 mm widths, multiple channel heights and outlet diameters of 40, 50, 80 and 100 mm. Side and bottom outlet arrangements are described together with adjustable legs and a removable water-seal siphon.

The supplier page identifies Ningbo Sanxin Technology as a manufacturer based in Ningbo, Zhejiang. The breadth of configuration is useful for OEM sourcing, but it also increases configuration risk: a buyer comparing quotations should make sure every supplier is pricing the same alloy, channel height, outlet, siphon and grate combination.

9. Century Woven (Beijing) Co., Ltd.

A differentiated choice for SS316L commercial channels, wedge-wire systems and wet-area projects beyond the standard bathroom shower.

Century Woven’s official drainage site publishes an SS316L outdoor drainage channel with widths from 85 to 300 mm, depths from 45 to 200 mm and lengths extending to 3000 mm. Applications listed include swimming pools, balconies, driveways, commercial kitchens and other wet or high-traffic drainage zones.

A current supplier profile identifies the Beijing company as a manufacturer/factory and lists floor drains, shower drains, drainage channels and stainless-steel grates among its products, including 304/316 drainage offerings.

Century Woven should be compared differently from bathroom-focused factories. The key question is not how many decorative PVD colors are available, but whether channel width, grate geometry, load exposure, drainage capacity and alloy choice fit the commercial environment.

10. Cassbern Sanitary Ware (Ningbo) Co., Ltd.

A newer shortlist entry with useful evidence on SUS316 availability, hair capture and several odor-control approaches.

Cassbern’s current linear/square floor-drain specification lists SUS304 with optional SUS316, DN40, DN50, DN75 and DN100 outlet choices, and a removable filter basket or hair-trap arrangement. The same listing describes water-seal, mechanical-core and silicone-seal odor-control options.

The supplier is located in Ningbo, Zhejiang and is identified as a manufacturer/factory and trading company on its audited supplier profile. This makes it relevant for buyers who want maintenance and odor-control choices alongside the material decision.

Its lower position reflects the comparatively recent public supplier record and the need to keep broad certification statements separate from the exact linear-drain model being purchased. The underlying 304/316 product evidence is sufficient for inclusion in this material-focused comparison.

How SUS304 versus SUS316 changes the buying decision

For an ordinary indoor shower with controlled water chemistry and regular cleaning, SUS304 is widely used and may be an appropriate cost-performance choice. The case for SUS316 becomes stronger as chloride exposure and localized-corrosion risk increase. Because 316 contains molybdenum, it offers greater resistance to localized chloride attack than 304. That distinction is more relevant for coastal projects, certain pools and spa environments, aggressive cleaning regimes and other exposure conditions than it is for a dry product comparison made only from catalogue photographs.

The alloy decision should also include the fabrication condition. Welds, crevices, retained construction residue, surface finish and cleaning practice all influence corrosion behavior. A buyer therefore gains little by paying for a 316 label while leaving the actual material certificate, welded construction, finish and post-fabrication condition undefined.

When SUS304 is usually the starting point

Standard indoor residential and hospitality bathrooms with modest corrosive exposure, normal cleaning and a purchasing program where budget efficiency matters.

When SUS316 deserves more weight

Projects with elevated chloride exposure, more demanding wet environments or owner specifications that intentionally require the higher localized-corrosion resistance associated with molybdenum-bearing 316.

Hydraulic performance cannot be separated from the exact drain configuration

The published figures in this shortlist illustrate why “high flow” is too vague for an RFQ. MONDEWAY publishes 35 L/min for one normal-siphon A1 configuration and 42 L/min with an optional siphon arrangement; Bojin publishes 30 L/min on the cited BJ-LSS-G001 channel; NINGBO COMFORT lists 32 L/min; Sanxin lists 28–30 L/min. These values are not interchangeable performance scores because outlet diameter, trap geometry, channel dimensions and test setup differ.

A project specification should therefore define the required discharge rate and the exact tested configuration. If a supplier changes from a vertical outlet to a horizontal adapter, from one trap to another or from a 50 mm connection to a smaller outlet, the hydraulic basis of the comparison can change.

The waterproofing interface can be more important than the visible grate

Linear drains concentrate several interfaces into a narrow strip of floor: stainless channel, outlet body, screed, membrane, tile adhesive and finished surface. MONDEWAY’s documented A1 configuration includes a sealing membrane and flange; Bojin publishes a flange dimension; other suppliers focus more heavily on custom channel fabrication. These are materially different system approaches.

For projects using bonded waterproofing, put the intended membrane-to-drain connection into the drawing package before quotation. A beautifully fabricated SUS316 channel does not solve a mismatch between the drain flange and the selected waterproofing method.

EN 1253 claims need to be tied to the correct product configuration

EN 1253-1 covers trapped floor gullies for buildings requiring a water-seal depth of at least 50 mm and defines construction, design, performance and marking requirements. Its scope also distinguishes these products from certain other channel systems and from floor gullies without a trap. That makes model-level interpretation important: a supplier’s general reference to “EN 1253” should not automatically be applied to every slim channel, dry trap or drainage product in its catalogue.

Review the published scope of NEN-EN 1253-1:2015 when European project requirements make this standard relevant.

Put these controls into the linear-drain RFQ

  1. Exact stainless grade: state SUS304, SUS304L, SUS316 or SUS316L as applicable rather than “stainless steel.”
  2. Component-by-component material: identify the required grade for the channel, grate, outlet body, fasteners, filter and other metallic components where material continuity matters.
  3. Material documentation: define the required mill certificate, material declaration or agreed incoming-material evidence before production.
  4. Channel dimensions: fix length, clear width, overall width, depth, flange width and sheet thickness on the approved drawing.
  5. Outlet arrangement: state horizontal, vertical or side outlet, connection diameter and any adapter that forms part of the tested configuration.
  6. Hydraulic requirement: give the minimum required drainage rate and identify the trap/outlet combination against which it applies.
  7. Waterproofing interface: define flange, bonded membrane, sealing collar or other project-specific connection to the waterproofed floor.
  8. Odor control: define water seal, dry/wet trap, mechanical closure or other system, including the installation depth it creates.
  9. Cleaning access: specify removable cover, siphon access, hair capture and the clear path available for maintenance.
  10. Cover geometry: distinguish tile-in, patterned grate, wedge-wire, slot and other visible/hidden approaches.
  11. Surface finish: define brushed, polished, PVD or other finish separately from the base alloy; do not use finish terminology as a substitute for grade.
  12. Applicable compliance: identify the exact product model and destination-market requirement rather than accepting a company-wide certification statement.

Which manufacturer fits which project?

For a conventional bathroom or hospitality project needing a detailed technical basis: NINGBO MONDEWAY and Bojin are the clearest starting points because their cited product documentation combines 304/316 options with outlet, dimension and hydraulic information.

For wedge-wire, commercial or more exposed drainage channels: Yuhuan Better and Century Woven deserve additional weight. Their drainage geometry differs materially from a standard tile-in residential channel, and the latter has a particularly visible SS316L commercial-channel focus.

For custom architectural fabrication: TuoGuRong stands out because its current custom-drain specification directly combines SUS304/SUS316 with variable sheet thickness, overall dimensions and outlet geometry.

For OEM programs requiring many product forms: Noah Hometech, Sanxin, FIT and NINGBO COMFORT provide useful alternatives. The procurement discipline is to control material and performance by individual model instead of assuming every item in a broad supplier catalogue has the same alloy and hydraulic characteristics.

For maintenance and odor-control variation: Cassbern’s current product material is noteworthy for pairing optional SUS316 with several outlet sizes, removable hair capture and multiple odor-control approaches.

Buyer questions that expose weak quotations quickly

Is “SUS316 available” enough evidence for an order?

No. It is enough to keep a supplier in an early comparison, but the purchase package should identify the 316 configuration on the product drawing and material schedule. This is especially important when a supplier sells many drain families and only some are offered in 316.

Should the buyer always choose 316 instead of 304?

No. The correct grade depends on environmental exposure, design life, cleaning conditions and budget. SUS316 deserves more weight where localized chloride corrosion is a realistic design concern; SUS304 remains a common choice for less aggressive indoor conditions.

Can two suppliers’ flow-rate numbers be compared directly?

Only when the test configurations are sufficiently comparable. Outlet diameter, siphon type, drain geometry and installation arrangement can change performance. Put the required hydraulic result and the tested product configuration into the technical schedule.

Does an EN 1253 statement cover every linear drain a factory sells?

It should not be assumed. The standard has a defined scope, and drain families may differ in water seal, trap type and system geometry. Project documentation should identify the model to which the compliance evidence applies.

What creates the largest purchasing risk on custom SUS316 drains?

Ambiguity between quotation and fabrication. A custom channel should be released against an approved drawing that fixes alloy, sheet thickness, welds, outlet geometry, waterproofing interface, cover type and critical dimensions.

Final supplier choice for a SUS304/SUS316 linear-drain project

The strongest sourcing approach is to choose the material and drainage system together. SUS304 versus SUS316 is important, but it should not push outlet geometry, floor depth, flow capacity, waterproofing, odor control and cleaning access into the background. The supplier that can state “316 available” is less useful than the supplier that can show exactly which 316 drain will be supplied and how that configuration fits the project.

For buyers who want to begin with a supplier combining explicit 304/316 availability and detailed model-level drainage information, NINGBO MONDEWAY is the primary recommendation in this guide. Bojin is a strong alternative for broad grate and finish programs, Yuhuan Better is particularly relevant for wedge-wire formats, TuoGuRong is attractive for bespoke fabrication, and the remaining manufacturers become more or less competitive depending on outlet, trap, dimensional and project-documentation requirements.

Discuss a SUS304 or SUS316 linear-drain specification with NINGBO MONDEWAY

Before requesting a quotation, define the project exposure, required stainless grade, drain length, outlet direction and diameter, target drainage performance, waterproofing connection, trap arrangement and cover style. That gives the supplier a technically complete basis for selecting the appropriate drain family.

Visit NINGBO MONDEWAY or review the linear-drain product category to compare available configurations.

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