HDPE Pipes and Fittings Manufacturers

Our HDPE Fitting Range

We group HDPE fittings by jointing method, because the welding or mechanical system determines where a fitting can be installed, which pipe sizes it suits and what site equipment is required. Each range below is produced from virgin PE80 or PE100 resin and inspected against the same dimensional and pressure criteria.

Function Types and Where They Fit

Within each jointing range we supply the standard functional families that a pipeline designer specifies. Straight runs use couplings and reducers; direction changes use 45° and 90° elbows; branch connections use equal and reducing tees; terminations use end caps and stub ends; transitions to metal or threaded equipment use male and female adapters; flow isolation uses ball valves. Saddle fittings and repair couplings support live-network intervention.

Material and Specification Control

Our HDPE fittings are moulded from 100% imported virgin PE80 or PE100 resin. PE100 provides higher minimum required strength and better resistance to slow crack growth, which matters for buried mains under traffic loading and for gas networks. We do not use reprocessed material in pressure-rated fittings.

• Size range: DN20 to DN1200 across the full fitting programme.
• Pressure ratings: PN10 to PN16, selected by size, jointing method and medium.
• Standards: DIN 16963, ISO 4427-3, EN 12201 and EN 1555 for gas applications.
• Threads: BSP and NPT on threaded adapters, with brass inserts.
• Colour: black and blue as standard, with batch identification.

Wall thickness, socket depth, heating-coil resistance and ovality are checked as part of in-process inspection. Fittings are dimensionally matched to our own HDPE pipe, so a specified DN size and SDR produces a compatible joint without field adjustment.

Application Fit

HDPE fittings suit systems where corrosion resistance, flexibility and long service life outweigh the rigidity of metal. The material is chemically inert across a wide range of fluids and does not rust, scale or support galvanic corrosion.

• Municipal water supply and drainage: buried mains, distribution branches and service connections.
• Natural gas distribution: electrofusion and butt fusion joints for leak-tight networks.
• Sewage and wastewater: large-diameter underground drainage and treatment plant piping.
• Agricultural irrigation: field laterals, pump connections and rural water network renovation.
• Industrial fluid transfer: chemical, cooling water and process lines where inertness is required.

For projects that also require hot-water or building services piping, our PPR FITTING range covers the complementary pressure and temperature duties within the same supply scope.

Jointing, Installation and Site Support

Joint quality in an HDPE system depends on matching the fitting to the correct welding procedure. We confirm the intended jointing method at quotation stage so that fittings, pipe SDR and site equipment are consistent.

• Socket fusion: pipe end and fitting socket are heated and inserted to form a homogeneous joint, typically for pipe below 110 mm.
• Butt fusion: pipe ends are faced, heated and pressed together for DN63 and above, producing a joint stronger than the pipe body.
• Electrofusion: current is applied to embedded coils, which suits confined trenches, repair work and controlled gas installations.
• Compression: mechanical assembly without heat for service and irrigation connections.

We supply installation guidance covering heating times, insertion depth, cooling periods and pressure testing. For larger projects, our technical team reviews isometric drawings and joint schedules before production so that the delivered fitting set matches the installed configuration.

Quality Assurance and Acceptance

Production runs under a full-process control system from raw material intake to finished goods release. Shanghai Zhongsu Pipe Co., Ltd. holds ISO 9001, ISO 14001 and OHSAS 18001 certification, and operates a CNAS-accredited laboratory for material and product testing.

• Sampling tests on every production batch.
• Routine in-process inspection at fixed intervals during moulding.
• Dimensional, pressure and appearance checks by the quality department.
• Factory inspection reports available as quality documentation for delivered lots.

Acceptance documentation is prepared against the agreed specification, including standard reference, size, pressure rating and material grade. Where a project requires third-party or client witness testing, we coordinate the inspection schedule with the buyer's representative.

Customisation, Packaging and Delivery

We manufacture custom HDPE fittings and support OEM and ODM supply for distributors and project contractors. Non-standard dimensions, special branch angles, specific colour requirements and private-label packaging can be produced against approved drawings or samples.

Fittings are packed in transparent plastic bags in specified quantities and placed in dedicated cartons. Pipe is bundled and wrapped in woven bags. Packaging quantities, carton marking and pallet configuration are confirmed with the order so that goods arrive ready for site issue or warehouse storage.

Our monthly supply capacity reaches dozens of full containers. Standard delivery is typically around 15 days, with the final schedule depending on the order list and current production loading. We keep sufficient inventory of regular pipes and fittings to support repeat and mixed orders.

Information We Use to Configure Your Solution

To prepare an accurate fitting configuration and quotation, we work from the project data below. Where a full bill of materials is not yet available, an isometric drawing or joint schedule is enough for us to build the fitting list.

For a complete system quotation, combine the fitting schedule with our HDPE PIPE range so that pipe and fittings are supplied to the same specification and delivered together.

Maintenance, Spare Parts and Serviceability

HDPE fittings require no painting, cathodic protection or scheduled replacement under normal operating conditions. The welded joint becomes part of the pipeline, so maintenance focuses on valve operation, flange inspection and periodic pressure testing rather than fitting replacement.

When repair is needed, electrofusion saddle fittings, repair couplings and end caps allow intervention on an existing main. We supply replacement fittings in the original specification and can match historical sizes for network extensions or rehabilitation projects.

Frequently Asked Questions

Which HDPE fitting range should be used for a given pipe size?

Socket fusion fittings are designed for small to medium pipe, typically below 110 mm. Butt fusion and electrofusion fittings cover DN63 up to DN1200. Compression fittings are used for selected service and irrigation connections where heat jointing is not practical.

What material and pressure ratings do your HDPE fittings use?

We mould from virgin PE80 or PE100 resin. Pressure ratings run from PN10 to PN16 depending on fitting type and size, with electrofusion fittings rated PN16 for water and PN10 for gas. Standards include DIN 16963, ISO 4427-3, EN 12201 and EN 1555.

Do you support custom and OEM/ODM HDPE fittings?

Yes. We produce custom HDPE fittings to approved drawings or samples and supply OEM and ODM programmes for distributors and contractors, including non-standard dimensions, special branch configurations and private-label packaging.

How is quality verified before shipment?

Every batch is sampled and tested, with in-process inspection at fixed intervals during production. Our CNAS-accredited laboratory supports material and product testing, and factory inspection reports are issued as quality documentation for delivered lots.

What is the typical delivery time and packaging?

Standard delivery is around 15 days, subject to order list and current production schedule. Fittings are bagged in specified quantities and packed in dedicated cartons; pipe is bundled and wrapped in woven bags. Packaging details are confirmed with each order.

Can you supply pipe and fittings as one package?

Yes. We manufacture HDPE pipe from DN20 to DN1200 and the matching fitting ranges, so a project can be supplied with pipe, fittings and jointing accessories to one specification from a single production source.