GULIAN PIPEHangzhou Gulian Pipeline System
Industrial product matrix of plastic pipes, fittings and valves arranged as a premium B2B manufacturing hero background
Our Products

Pipes, fittings and valves — built under one roof.

Three complementary product lines engineered to the same quality standard, so you can source a complete plastic piping system from a single manufacturer.

Gulian Fittings
01Fittings
Product Line 01

Fittings

Injection-molded for every standard.

A comprehensive range of plastic pipe fittings manufactured on 100+ injection machines. Engineered for pressure and non-pressure applications, from water supply and irrigation to chemical and industrial process lines.

  • Elbows, tees, couplings, reducers, caps, flanges, adapters, etc.
  • Socket, threaded, flanged and compression connection types
  • PVC-U, CPVC, HDPE, PPR, PVDF, PP and PPH materials available
  • DIN, ASTM, JIS and GB dimensional standards
Materials
PVC-U / CPVC / PPH
Size Range
20 mm – 400 mm
Standards
DIN · ASTM · JIS · GB
Certifications
ISO 9001 · NSF · CE
Gulian Pipes
02Pipes
Product Line 02

Pipes

Extruded to spec. Pressure-tested by batch.

Our 10 extrusion lines produce over 20,000 tons of plastic pipe annually — from potable water and irrigation to high-temperature industrial service. CPVC pipes are rated up to 93 °C, and every batch ships with pressure-test certificates.

  • PVC-U pressure & drainage pipes
  • CPVC pipes for hot water and chemical service (up to 93 °C)
  • PPH industrial pipes for demanding process lines
  • Custom lengths, colors and markings on request
Materials
PVC-U / CPVC / PPH
Size Range
20 mm – 400 mm
Max. Service Temp. (CPVC)
93 °C
Annual Capacity
20,000+ tons
Gulian Valves
03Valves
Product Line 03

Valves

Reliable sealing. Engineered for chemical service.

Industrial plastic valves built to handle aggressive media, long duty cycles, and demanding environments. Complete the piping system with the same quality controls and standards as our pipes and fittings.

  • Ball, butterfly, check and diaphragm valves
  • Chemical-resistant body and seal materials
  • Manual and actuated options on request
  • Matched to pipes & fittings for a complete system
Materials
PVC-U / CPVC / PPH
Size Range
20 mm – 400 mm
Standards
DIN · ASTM · JIS · GB
Quality
ISO 9001 · pressure-tested
Spec to Delivery

Need a full piping system spec'd to your project?

Send drawings, a bill of materials or a simple list — one account manager will take it from there, all the way to delivery.

Factory-Direct30+ YearsISO 9001 · NSF · CEDIN / ASTM / JIS / GB