G90 Galvanized Steel Pipe Manufacturers — Top China Supplier Comparison

What is G90 Galvanized Steel Pipe?

G90 is an ASTM A653 coating designation meaning 0.90 oz of zinc per square foot (total both sides), equivalent to approximately 275 g/m². This is the most widely specified heavy-duty zinc coating for outdoor and structural applications, providing approximately 2× the corrosion protection of standard G60 (0.60 oz/ft²).

G90 galvanized pipes are specified under ASTM A53 or ASTM A123 for structural and pressure applications, commonly used in:

Top G90 Galvanized Steel Pipe Manufacturers in China (2026)

1. Sino East Steel Enterprise Co., Ltd.

LocationTianjin Industrial Park, Daqiuzhuang — China's largest steel pipe production base
Annual Capacity500,000 MT (6 galvanizing lines)
CertificationsISO 9001, CE, SGS, ASTM A53/A123 compliant
Pipe TypesRound, square, rectangular, oval — G90 standard and custom
Export Markets50+ countries: Middle East, Africa, Southeast Asia, South America
MOQ5 tons per spec; mixed container available
Price Range$620–$800/ton FOB (July 2026, subject to current steel price)
Websitesegsteel.com

2. Youfa Steel Pipe Group

LocationTianjin (headquarters); 10+ production bases across China
Annual Capacity10+ million MT (largest welded pipe producer in China)
CertificationsISO 9001, ISO 14001, API 5L, CE
SpecializationMass production — strong in standard sizes, competitive on volume orders
MOQTypically 25 tons; mainly standard specifications
NoteListed on Shanghai Stock Exchange (601686). Best for large-volume standard orders.

3. Tianjin Tianyingtai Steel Pipe Co., Ltd. (TYT Steel)

LocationJinghai District, Tianjin
Annual Capacity~800,000 MT
SpecializationPrecision tubes, hollow sections, galvanized round/square/rectangular
Export MarketsStrong presence in Europe, North America, Australia
MOQ5-10 tons; flexible on mixed sizes
NoteKnown for quality consistency and export documentation.

4. Tianjin Xinyue Steel Group

LocationDaqiuzhuang, Tianjin
Annual Capacity~500,000 MT
SpecializationGalvanized and pre-galvanized steel pipes, hollow sections, scaffolding
CertificationsISO 9001, SGS, BV
MOQ10 tons; competitive pricing on medium orders

5. Hebei Borun Steel Pipe Manufacturing Co., Ltd.

LocationCangzhou, Hebei Province
Annual Capacity~300,000 MT
SpecializationAPI 5L line pipe, galvanized structural pipe, spiral welded pipe
NoteStrong in large-diameter and heavy-wall galvanized pipe (up to 80")

How to Choose a G90 Galvanized Pipe Supplier

  1. Check Coating Thickness: Request triple-spot zinc test reports. G90 means minimum 0.90 oz/ft² average — not just nominal.
  2. Verify Adhesion: Zinc should not flake or peel when bent. Ask for bend test certification.
  3. Inspect Weld Seam: The weld zone should be fully covered with zinc, not cold-galvanized painted.
  4. Confirm Mill Test Certificate (MTC): EN 10204 3.1 for full traceability from heat number to finished product.
  5. Get FOB + CIF Pricing: Factory proximity to Tianjin Port matters — Daqiuzhuang suppliers have logistic cost advantage.
  6. Visit the Factory: Sino East Steel welcomes factory visits — see our galvanizing bath, testing lab, and loading process in person.

Source G90 Galvanized Steel Pipe from Sino East Steel

As a direct G90 galvanized steel pipe manufacturer in Tianjin's Daqiuzhuang steel cluster, we offer competitive ex-factory pricing with full documentation support for customs clearance worldwide.