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ASTM A252 / GB/T 3091 Galvanized spiral steel pipe - Referring to international/domestic standards

At the core of Youfa plastic-lined pipes' appeal is their unique dual-layer construction, which combines the strength of metal with the corrosion resistance of plastic. The pipes consist of a sturdy steel or ductile iron outer layer, providing structural integrity and pressure-bearing capacity, and a smooth plastic inner lining—typically made from materials like polyvinyl chloride (PVC), polyethylene (PE), or cross-linked polyethylene (PEX). This plastic lining acts as a barrier between the conveyed fluid and the metal substrate, preventing corrosion, rust, and contamination. For fire protection systems, where water quality can vary and stagnant water may sit in pipes for extended periods, this corrosion resistance is crucial. It ensures that the pipes remain free from rust deposits that could clog sprinkler heads or reduce water flow during emergencies. In municipal drinking water applications, the food-grade plastic lining guarantees that the water remains untainted by metal ions or contaminants, complying with strict health standards such as those set by the World Health Organization (WHO) and local regulatory bodies.

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Steel-plastic type

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ASTM A252 / GB/T 3091 Galvanized spiral steel pipe - Referring to international/domestic standards

Product Name	Steel-Plastic Composite Pipe (SPCP)
Structure	1. Inner Layer: Food-Grade Polyethylene (PE) / Cross-linked Polyethylene (PEX)
	2. Adhesive Layer
	3. Steel Pipe Core (Welded/Cold-Welded)
	4. Adhesive Layer
	5. Outer PE/PEX Layer
Key Advantages	Corrosion Resistance
	High Pressure Tolerance
	Smooth Inner Surface (Low Scaling)
	Long Service Life (50+ years)
	Lightweight & Easy Installation
Sizes (Diameter)	DN15–DN300 (1/2"–12")
Plastic Liner/Coating	HDPE / PEX-b / PERT / PP-R
Standards & Certs	ISO 21003, EN 12201 • ASTM F1335, NSF/ANSI 61 • WRAS, KIWA • GB/T 28897 (China)
Price Terms	FOB,CFR,CIF EXW
payment method	L/C D/P D/A TT

Packing Details : in hexagonal seaworthy bundles packed by steel strips, With two nylon slings for each bundles.
Delivery Details : Depending on the QTY, normally one month.

High Quality Guaranteed
1) During and after production, 4 QC staffs with more than 5 years experience inspect products in random.

2) National accredited laboratory with CNAS certificates

3) Acceptable inspection from third party appointed/paid by buyer, such as SGS, BV.

4) Approved by Malaysia, Indonesia, Singapore, Philippines, Australia, Peru and UK.

Steel-plastic type

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XING RONG firmly believe that quality is paramount. As aprofessional steel pipe manufacturing enterprise, weare equipped with advanced technology andsophisticated production equipment; and providecomprehensiveservicesandsupport,strictlycontrolling every link from raw material procurement,manufacturing,qualitycontrolandexporttransportation, to meet the growing demand in thefield of building structures and fluid transportationaround the world. Always adhere to green andenvironmentally friendly production methods, adhereto the principle of sustainable development,andstrive to create a better world !

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+8613920018539

TIANJING, CHINA

Room 1503, 1st Floor, Ten Billion Dao XING RONG Sales Department, Jinghai District, Tianjin

youfa@cngisteel.com

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