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30+ Years of Manufacturing
Since 1992, manufacturing is all we do. You deal directly with the source — no layers, no markups, no middlemen.
Since 1992 · Factory-Direct Manufacturer
Plastic Piping Systems,Engineered for the World.
Hangzhou Gulian Pipeline System manufactures PVC-U, CPVC, HDPE, PPR, PVDF, PP and PPH pipes, fittings and valves at our 50,000 ㎡ facility in Jiangshan, Zhejiang — shipping to 30+ countries with DIN, ASTM, JIS and GB compliance under one roof.
- 30+
- Years
- 50,000㎡
- Factory
- 20,000t
- Annual
- 30+
- Countries
Certified & Standards Compliant
- ISO 9001
- NSF
- CE
- DIN
- ASTM
- JIS
- GB
Who We AreRead our story
A manufacturer — not a trading company.
When you source from Gulian, you're talking to the people who actually make the pipes, fittings and valves. No sales agent in the middle, no markup layer, no third party translating your spec.
That means straight pricing, direct engineering support, and a single point of accountability — from your first inquiry through to the container leaving port.
Jiangshan Factory
Extrusion Line
Est. 1992
30+ Years
Jiangshan, China
Factory Base
PVC-U · CPVC · PPH
Core Materials
DIN · ASTM · JIS · GB
Standards
Company Video
See the factory behind the pipeline systems.
A closer look at Gulian's production environment, manufacturing capability, and factory-direct process for global pipe system buyers.
Product Lines
View all productsOne-stop pipeline solutions — pipes, fittings, valves.
Everything your project needs, manufactured under one roof to a single, consistent quality standard.
Fittings
01Elbows · Tees · Couplings · Reducers · Flanges
Full range of injection-molded fittings for pressure and non-pressure applications — compatible with every major international standard.
Learn more
Pipes
02PVC-U · CPVC · PPH
Extruded plastic pipes from 20 mm to 400 mm, CPVC rated to 93 °C, delivered with batch-level pressure-test certificates.
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Valves
03Ball · Butterfly · Check · Diaphragm
Industrial plastic valves engineered for chemical resistance, long service life, and reliable sealing in demanding environments.
Learn moreOn The Show Floor
Full product range. Every show.
We exhibit at major industry trade shows across Asia and Europe, bringing the complete Gulian product range, live product demonstrations, and our engineering team directly to international buyers.
Canton FairAquatech AmsterdamISH FrankfurtTube China
Meet us in person
Planning to attend an upcoming exhibition? We're happy to schedule a booth meeting or product briefing in advance.
Schedule a meeting
Gulian Pipe Booth
Why Gulian
Seven things that change when you skip the middleman.
Real capacity on the floor. Certificates on every batch. One contact who owns the result from sample to shipped container.
02
Massive In-House Capacity
50,000 ㎡, 100+ injection machines, 10 extrusion lines, 20,000+ tons annual capacity.
03
One-Stop Pipeline Solutions
PVC-U, CPVC (rated to 93 °C), PPH industrial pipe. Pipes, fittings, valves from 20 mm to 400 mm — from one manufacturer.
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Global Standards, One Factory
DIN, ASTM, JIS, GB — all under one roof. No switching suppliers when your market changes.
05
Strict Quality Control
ISO 9001, NSF and CE available. Every batch pressure-tested with certificates.
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Factory-Direct & One Contact
One account manager from inquiry to delivery. Samples to full containers — we own the result.
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Proven Global Reach
Shipping to 30+ countries across Southeast Asia, the Middle East, Africa, and South America.
Ready to order?
Talk to the factory — not the middleman.
Send us your drawings, standards or a simple product list. One account manager, one point of contact, from first sample to full container.
Factory-Direct30+ YearsISO 9001 · NSF · CEDIN / ASTM / JIS / GB