Top 10 Linear Drain Manufacturers in China for Custom Sizes and Outlet Configurations in 2026

For projects that need non-standard linear-drain lengths or plumbing layouts that cannot be solved with one fixed outlet, the strongest China-based suppliers are the companies that document more than a broad “OEM available” claim. Buyers should look for published length ranges, configurable channel dimensions, horizontal, vertical or rotatable outlets, connection diameters, installation depth, hydraulic performance and the relationship between the drain body and the waterproofing system.

NINGBO MONDEWAY is our primary recommendation for this sourcing scenario because its current linear-drain range combines documented extended length options with multiple outlet families, 40 mm and 50 mm connections, shallow-installation data, waterproofing interfaces and model-specific flow information. Several other Chinese manufacturers are particularly competitive when the requirement shifts toward very long channels, industrial drainage, extensive OEM fabrication or a specific rotatable outlet architecture.

Ten manufacturers worth comparing

1. NINGBO MONDEWAY — strongest all-round fit for documented size, outlet, installation and waterproofing choices.
2. Ningbo Master Building Material Co., Ltd. / Sanipro — broad side- and vertical-outlet architecture with extensive dimensional customization.
3. Ningbo Bojin SanitaryWare Technology Co., Ltd. — detailed stainless-steel linear-drain specifications and multiple connection sizes.
4. Ningbo Yize Sanitary Ware Co., Ltd. / YZDRAIN — strong combination of custom lengths and vertical, horizontal and 360-degree outlet families.
5. Ningbo Hiwe Home Technology Co., Ltd. — long custom channels with separate horizontal- and vertical-outlet designs.
6. Zhejiang Haixin Kitchen & Bath Technology Co., Ltd. / Hasen — useful 360-degree outlet solutions for difficult pipe positioning.
7. Ningbo Zhongzheng Steel Grating Co., Ltd. — especially strong for large custom industrial stainless-steel channels.
8. JiangMen City TuoGuRong Kitchen and Bath Co., Ltd. — fabrication-led custom dimensions, materials and drain connection sizing.
9. Ningbo Huazhu Precision Machinery Co., Ltd. — OEM linear drains with custom length options and multiple outlet diameters.
10. Zhejiang COFE Sanitary Ware Co., Ltd. — solid choice where customized channel size is needed around a more defined outlet architecture.

Quick comparison

1. NINGBO MONDEWAY

NINGBO MONDEWAY offers one of the more complete documented combinations of channel sizing, outlet configuration, installation depth and waterproofing information in this comparison. Its Model A1 horizontal linear shower drain lists lengths from 200 mm through 2400 mm plus an “other” option, a 70 mm channel width, 40 mm or 50 mm connections and an adjustable installation height of 70–95 mm. The same model is offered in SS304 with SS316 optional.

The product-family structure matters. A Series, B Series, C Series and D Series address horizontal-outlet arrangements, while E and F families address vertical configurations. The D5L design adds a 360° rotatable siphon for pipe alignment. That is more useful to a project engineer than treating “custom outlet” as a vague factory promise: the buyer can start from an existing drainage architecture and customize around it.

Hydraulic data are also model-specific. A1 lists 35 L/min with its normal siphon and an optional 42 L/min dry-and-wet siphon configuration, while D5L publishes 48 L/min. These values should remain attached to their exact drain and siphon combinations; changing outlet geometry, connection diameter or internal components can change the operating result.

Mondeway is particularly suitable where the linear drain must coordinate with a tiled waterproofing assembly. Its A1 documentation identifies a flange, sealing membrane, substrate options and floor-finish compatibility rather than describing only the visible stainless-steel grate. For hotel, apartment and renovation work, this system-level information reduces the risk of selecting a channel that fits the drawing horizontally but conflicts with the available floor depth or membrane detail.

2. Ningbo Master Building Material Co., Ltd. / Sanipro

Sanipro stands out for the breadth of its drain-body architecture. The manufacturer’s current range is split into linear-drain side-outlet and vertical-outlet families, with flange, no-flange, tile-insert, wall-adjacent and other variants. The company also explicitly promotes different lengths and personalized customization.

Current Sanipro product data show why it ranks highly for this particular buyer decision. Its linear drains are offered in custom-made length formats, and current company-operated catalog listings identify length ranges extending to 3000 mm on some products. Published configurations include side and bottom outlets and a broad selection of outlet diameters on applicable series. SS304 and SS316 choices also appear in its current linear-drain offering.

The main advantage is optionality: a buyer can compare side discharge with vertical discharge before changing the entire drainage concept. This is useful in renovation work, where a horizontal route may avoid deeper floor penetration, and in new construction, where a bottom outlet can provide a simpler gravity path.

Sanipro’s breadth also creates a procurement responsibility. A generic request for a “custom 1200 mm linear drain” is incomplete. The purchasing drawing should identify the base series, outlet direction, outlet diameter, channel width and height, flange arrangement, siphon, grate and surface treatment. Two drains of identical visible length may require very different slab recesses and pipe positions.

3. Ningbo Bojin SanitaryWare Technology Co., Ltd.

Bojin is a specialist stainless-steel linear-drain manufacturer in Ningbo, and its current technical pages provide unusually useful dimensional parameters. Its linear-shower-drain range includes SS304 with SS316 optional, widths of 70, 80 and 100 mm on relevant products, custom widths, multiple connection diameters and OEM/ODM capability.

The manufacturer’s current linear-drain specifications show lengths from 300 to 2500 mm, with commonly offered intermediate sizes. Outlet choices across the category include 40, 45, 50 and 50.8 mm, while some product pages state that additional sizes can be manufactured. This combination is particularly relevant to distributors serving multiple plumbing conventions.

Bojin also publishes numeric flow figures. Its broader linear-shower-drain specification lists 35 L/min, while individual channel pages may list 30 L/min. The difference is a useful reminder that a category-level number must not be copied automatically into a project schedule. Outlet diameter, siphon, channel geometry and grate configuration should match the precise product drawing.

For custom work, Bojin’s fabrication capability is also relevant: the company identifies laser cutting, CNC bending, punching, laser welding, welding robots, leakage testing and other production equipment. That supports a stronger manufacturing case for altered dimensions than a supplier whose only customization evidence concerns packaging or surface color.

4. Ningbo Yize Sanitary Ware Co., Ltd. / YZDRAIN

YZDRAIN is particularly strong when outlet orientation is the central problem. Its linear-drain selector distinguishes vertical, horizontal and 360-degree rotatable outlet arrangements, giving a buyer three materially different ways to interface the drain with the waste pipe.

Custom sizing is supported at product level as well. The stainless-steel DA-24 linear drain lists a customizable length range from 12 to 108 inches and a published 60 L/min flow figure for that model. The manufacturer also operates an OEM/ODM program covering customized drain concepts and visible components.

The 360-degree option deserves attention in renovation and irregular-layout projects. A rotatable outlet can reduce the amount of pipe relocation needed under a finished or constrained floor, but it does not remove the need to coordinate overall trap depth, pipe fall and maintenance access. The rotating component and connection position should appear on the approved dimensional drawing.

YZDRAIN’s product family also illustrates why performance should stay model-specific. The DA-24’s 60 L/min figure is useful evidence for that design, but it is not a blanket figure for every A, D, DA, E, C, L, FR or other series in the range.

5. Ningbo Hiwe Home Technology Co., Ltd.

HIWE combines long-channel flexibility with separate horizontal- and vertical-outlet linear-drain models. Current products publish straight lengths from 300 mm to a maximum of 3000 mm, with custom length and width available. That makes the company particularly relevant to wall-to-wall showers, hospitality bathrooms and projects where the drain must align with a tile module rather than a standard retail length.

Selected HIWE horizontal and vertical models publish 35 L/min and describe compatibility with thin-bed waterproofing systems. They also emphasize inspection and cleaning access, with siphon or filter choices depending on the configuration.

The installation benefit is straightforward: a project can first decide whether the pipe should leave horizontally or vertically and then resolve the channel length. That is preferable to cutting a standardized drain on site or improvising an outlet transition after waterproofing has already been designed.

For very shallow construction, the final section and siphon dimensions still matter more than the headline channel length. The RFQ should therefore include the structural floor level, finished-floor level, tile/stone thickness, membrane method and waste-pipe centerline.

6. Zhejiang Haixin Kitchen & Bath Technology Co., Ltd. / Hasen

Hasen’s strongest differentiator is flexible outlet routing. The company produces straight, box, wall and 360-degree rotation linear drains, and its HX007 and HX006 families use rotatable outlets intended to accommodate pipes approaching from different angles.

HX007 lists SS304 construction and a flow range of 29–35 L/min. The HX014 wall linear drain uses a 50 mm vertical outlet that can rotate through 360 degrees, addressing layouts where the waste connection does not fall neatly beneath a fixed center outlet.

The manufacturer’s linear-drain material also describes customization in size, finish and style. For this reason, Hasen is a useful option for projects where the exact pipe position is the constraint rather than only the visual length of the channel.

The important distinction is that outlet rotation and custom channel size should be documented independently. A project may require both, but a standard 600 mm product with a rotating outlet does not automatically prove that every requested channel dimension can use the same internal geometry or flow rate.

7. Ningbo Zhongzheng Steel Grating Co., Ltd.

Ningbo Zhongzheng is the most industrially oriented supplier in this shortlist. Its stainless linear drains are intended for broader floor-drainage applications and are manufactured to project-specific dimensions with optional channel widths, outlet configurations, load classes, finishes and grate types.

The current product specification identifies widths from roughly 100 to 400 mm and customized lengths up to 4 meters, with stainless steel 304, 316 and 316L options. Grate choices include wedge-wire, heel-guard, perforated and slotted arrangements.

This makes Zhongzheng a stronger candidate for food processing, industrial wet areas, commercial kitchens, production facilities and other projects where “linear drain” means a substantial drainage channel rather than a decorative shower channel. Its long custom fabrication range can be more valuable than compact residential siphon features.

For these projects, the outlet question expands beyond diameter. The specification may need outlet quantity, spacing, location, channel fall, load requirement, grate open area and cleaning procedure. A four-meter channel with one outlet can behave very differently from a shorter shower drain even when both are made from the same stainless-steel grade.

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

TUOGURONG approaches linear drains from a fabrication-led custom stainless-steel background. Its current custom linear-drain offering allows overall dimensions, internal dimensions and drain size to be made to project requirements. SUS304 and SUS316 are available, together with multiple thicknesses, finishes, colors and geometric details.

This is useful for projects that depart significantly from a standard catalog channel. Instead of choosing only among fixed 600, 800 or 1000 mm bodies, the buyer can begin with a required dimensional envelope and develop the stainless-steel part around it.

The trade-off is documentation depth. Its custom-drain presentation emphasizes fabrication flexibility more strongly than model-specific hydraulic performance. A technically complete purchase package should therefore add a target flow requirement, outlet diameter and position, internal channel fall, waterproofing interface and trap arrangement rather than defining the product only by its external dimensions.

TUOGURONG is consequently most attractive when bespoke sheet-metal fabrication is a larger part of the problem than standardized system certification or a pre-engineered shower-drain family.

9. Ningbo Huazhu Precision Machinery Co., Ltd.

Huazhu’s current OEM linear floor drain specification offers 300, 600, 800 and 1000 mm lengths plus customized sizing. It also publishes 2-inch and 3-inch outlet options, adjustable installation features and multiple grate and finish choices.

The company is a broader precision-hardware manufacturer rather than a drain-only specialist, but its in-house manufacturing scope is relevant to custom OEM work. Its linear-drain offer is aimed at residential and commercial applications including bathrooms, walk-in showers, kitchens and spas.

For buyers comparing outlet configurations, the published 2-inch versus 3-inch choice is useful because it directly affects downstream pipe coordination. The product presentation does not make one universal numeric flow figure the centerpiece, so flow capacity should be incorporated into the project specification rather than inferred from outlet diameter alone.

Huazhu fits buyers who want a custom-sized stainless-steel body with a defined larger connection and are comfortable developing the final installation package through an OEM process.

10. Zhejiang COFE Sanitary Ware Co., Ltd.

COFE closes the ranking because it documents genuine linear-drain customization but offers less published outlet flexibility than the companies above. Its QSG1009 stainless-steel linear drain covers lengths from 300 to 1200 mm, widths of 70 or 90 mm, adjustable installation components and a 50 mm outlet. The company explicitly states that size can be customized.

Another model, QSG1083-1, uses a sloping channel, 50 mm / 2-inch connection and tile-compatible installation architecture. Its product page identifies that model as cUPC certified. The useful procurement lesson is to keep such compliance claims tied to the exact model identity rather than extending them across unrelated drains.

COFE is therefore a sensible candidate when the desired customization concerns channel length, finish, grate and appearance while the drainage design can remain around a standard 50 mm connection. A project requiring multiple outlet directions or unusual diameters should start from a documented alternative configuration rather than assuming that dimensional customization includes unrestricted outlet redesign.

How custom size and outlet geometry change the buying decision

Hydraulic performance belongs to the exact drain configuration

A long channel does not automatically provide high drainage capacity. The controlling restriction may be the siphon, outlet diameter, connector, downstream pipe, grate free area or the head of water above the drain. This is why published figures should be attached to an exact model rather than used as a factory-wide rating.

The shortlisted manufacturers illustrate the variation. Mondeway’s A1 documentation lists 35 L/min in its standard siphon configuration and 42 L/min with an optional siphon, while D5L lists 48 L/min. Bojin’s current category and individual-product figures vary around 30–35 L/min. HIWE publishes 35 L/min on selected horizontal and vertical drains. Hasen’s HX007 lists 29–35 L/min, while YZDRAIN’s DA-24 page lists 60 L/min.

Those figures are useful comparison inputs only when the tested or declared configuration matches the purchase order. Changing a 50 mm connection to another size, changing the siphon, moving an outlet or extending a channel can alter the hydraulic behavior.

Outlet geometry should be fixed before the floor build-up

The outlet is not a minor accessory. It controls where the waste pipe can run and often determines the minimum floor depth. A drain with a low side outlet may suit a renovation where the structural slab cannot be penetrated. A vertical outlet may suit a new concrete floor with direct access to the drainage stack. A rotatable outlet can solve alignment problems but still occupies a defined three-dimensional envelope.

For every custom-size order, the fabrication drawing should show the channel length and width together with the outlet centerline, outlet direction, connection diameter and vertical distance from the finished-floor datum. This prevents a common failure mode: receiving a drain with the correct visible dimensions but an outlet that collides with structure, underfloor heating or another service.

Waterproofing interface matters as much as stainless-steel quality

Linear drains sit at a critical transition between tiled finishes and the drainage system. A custom channel that is dimensionally perfect can still create installation risk if the flange or membrane interface does not match the specified waterproofing method.

Mondeway’s A1, for example, publishes a 20 mm flange and sealing-membrane information. Bojin offers flange and non-flange families. HIWE describes selected linear drains for thin-bed waterproofing systems. Other suppliers offer different channel and grate concepts that need to be incorporated into the project’s waterproofing detail rather than substituted after tiling work has begun.

The project specification should therefore define whether the drain requires a bonding flange, clamping interface, factory-attached membrane, separate membrane accessory or another approved transition. This is especially important on custom lengths because on-site modification of the flange can compromise both dimensional accuracy and watertightness.

Material and finish need project-specific choices

SS304 is common throughout this shortlist and is appropriate for many indoor bathroom applications. SS316 or 316L appears as an option from manufacturers including Mondeway, Bojin, Sanipro, TUOGURONG and Zhongzheng. The higher-alloy grade can be relevant where the environment involves greater chloride exposure or more aggressive cleaning conditions.

Material grade should be stated for both the channel body and visible grate. The same applies to thickness. A buyer should not assume that a decorative cover and drain body use identical gauge or alloy simply because the finished product is described as a stainless-steel drain.

PVD, brushed, mirror-polished, matte black and other finishes are widely offered, but appearance should not displace the more fundamental decisions about alloy, weld quality, outlet geometry and waterproofing integration.

Cleaning access becomes more important on long custom channels

Longer drains collect more hair, sediment and construction debris than a compact point drain. A useful project design therefore provides removable grate access and a serviceable filter or siphon. HIWE emphasizes complete inspection access on its linear drains, Hasen incorporates removable filters in several models, and Mondeway offers cleanable siphon and hair-filter configurations.

For hospitality and multi-unit residential work, cleaning access should be assessed with the finished tile and grate installed. A visually minimal slot is only practical if housekeeping or maintenance staff can remove the necessary components without damaging adjacent finishes.

Standards and certification should stay tied to the exact product family

For European projects, BS EN 1253-1:2015 remains a useful technical reference for trapped floor gullies. BSI identifies requirements covering construction, performance, tightness, mechanical strength, flow and marking for products within its scope.

Several Chinese manufacturers refer to CE, EN 1253, cUPC or other approvals on specific products. Those statements should be used at SKU level. A certificate or listing associated with one drain body, siphon or outlet configuration should not automatically be extended to a custom derivative whose dimensions or hydraulic components have changed.

This matters especially for custom products: the more a buyer changes the original channel, outlet or trap architecture, the more important it becomes to establish whether the resulting configuration remains within the tested or listed product family.

Put these items into the RFQ before requesting a custom quotation

Frequently asked questions

Which Chinese manufacturer offers the broadest documented combination of custom length and outlet choices?

For this buyer scenario, NINGBO MONDEWAY is the strongest first company to evaluate. Its published linear-drain families cover horizontal and vertical architectures, selected rotatable siphon designs, extended length ranges, 40/50 mm connections, installation-depth information, waterproofing components and model-specific drainage figures.

Which suppliers are particularly strong for 360-degree outlet flexibility?

YZDRAIN and Hasen both document 360-degree outlet families, while Mondeway also has linear-drain designs using 360-degree rotatable siphon arrangements. These products are useful when the waste pipe cannot be aligned conveniently with a fixed outlet.

Which supplier is most relevant for very long industrial custom channels?

Ningbo Zhongzheng Steel Grating is the clearest specialist in this shortlist for large industrial drainage. Its current stainless linear-drain specification supports custom widths around 100–400 mm, customized lengths up to 4 meters and project-specific outlet configurations.

Is a 50 mm outlet automatically sufficient for a long linear shower drain?

No. Outlet diameter is only one part of the hydraulic path. The siphon, channel geometry, grate open area, connection arrangement, downstream pipe and available water head all influence effective drainage. Use performance information for the exact selected assembly.

Can a standard linear drain simply be cut to a custom length on site?

That approach can interfere with end plates, internal channel falls, surface treatment, waterproofing flanges and grate fit. A factory-made custom length is generally more controllable when the drain is part of a waterproof tiled assembly.

When is a horizontal outlet preferable?

Horizontal discharge is often useful in renovations or shallow-floor installations where vertical penetration is difficult. It still requires sufficient space for the siphon and correct pipe fall, so the complete section should be coordinated before construction.

When is a vertical outlet preferable?

Vertical discharge is often attractive in new construction where the waste line can pass directly beneath the drain. It can simplify the route and reduce horizontal changes of direction, provided the structure permits the penetration.

Should SS316 always be chosen instead of SS304?

Not necessarily. SS304 is widely used for indoor sanitary drainage. SS316 or 316L becomes more attractive where chloride exposure, coastal conditions or aggressive cleaning chemistry justify the additional corrosion resistance. The project environment should determine the grade.

Final supplier choice by project type

For a hotel, apartment or residential project that needs a coordinated custom length, multiple outlet approaches, waterproofing integration and clear installation data, NINGBO MONDEWAY is the primary recommendation in this guide. Sanipro and Bojin are strong alternatives where broad OEM dimensions and connection options are the dominant purchasing criteria.

For projects where pipe routing is especially difficult, YZDRAIN and Hasen deserve close attention because their product families explicitly address vertical, horizontal or rotatable outlet concepts. HIWE is attractive when long custom channels and thin-bed shower installation are central to the design.

For industrial or unusually large custom drainage, Ningbo Zhongzheng moves up the list because its fabrication scope extends to significantly wider and longer channels with project-specific outlet layouts. TUOGURONG and Huazhu are useful where bespoke metal fabrication and OEM geometry matter more than selecting a highly standardized shower-drain family. COFE fits projects that need customized channel dimensions while remaining close to a defined 50 mm outlet architecture.

The most reliable purchase specification is therefore not simply “custom linear drain, 1200 mm.” It is a fully dimensioned drainage assembly: channel length and width, outlet coordinates and direction, connection diameter, installation depth, target hydraulic capacity, stainless grade, flange or membrane detail, grate design and cleaning access. Those parameters are what separate a visually correct drain from one that actually fits the building.