exporter of hot-dip galvanized rectangular hollow 100x100 weleded steel pipe and tube gi square pipe box section 12mm
| Technique | Electrical Resistance Weld (ERW) | ||
| Usage | Construction / building materials steel pipe Scaffolding pipe Fence post steel pipe Fire protection steel pipe Greenhouse steel pipe Low pressure liquid, water, gas, oil, line pipe Irrigation pipe Handrail pipe | ||
| Standard | BS EN 10219 ASTM A500, JIS G3466, GB/T6728 | BS EN 10219 ASTM A500, JIS G3466, GB/T6728 | |
| Material | S195, S235, S355/GRA, GRB/STK400/ SS400/ Q195, Q235, Q345 | ||
| Surface | 1. pre-galvanized (Zinc coating: 40-80g/m2) hot dipped galvanized (Zinc coating: 200-600g/m2 ) 2. oiled with PVC wrapped 3. varnished / painted in black or red or other color 4. Anticorrosive coating: 3PE / 3PP / FBE / Epoxy | ||
| Pipe Ends | plain ends | plain ends | plain ends |
| Packing | outer diameter 400*400m and above: piece by piece. outer diameter 400mm and below: in hexagonal seaworthy bundles packed by steel strips. small sizes nested into big sizes. | ||
| Trade terms | FOB/ CIF/ CFR / FCA / EXW | ||
| Delivery time | 15-45 days (based on quantity) after receiving advanced payment by T/T or LC. | ||
| Main market | Southeast Asia, South Asia, Middle East, Europe, Middle&South Americ, Africa and Oceania |
| Square and Rectangular Steel Pipe size chart | ||
| Square Hollow Section | Rectangular Hollow Section | Thickness |
| 20*20 25*25 30*30 | 20*40 30*40 | 1.2-3.0 |
| 40*40 50*50 | 30*50 25*50 30*60 40*60 | 1.2-4.75 |
| 60*60 | 50*70 40*80 | 1.2-5.75 |
| 70*70 80*80 75*75 90*90 100*100 | 60*80 50*80 100*40 120*80 | 1.5-5.75 |
| 120*120 140*140 150*150 | 160*80 100*150 140*80 100*180 200*100 | 2.5-10.0 |
| 160*160 180*180 200*200 | 200*150 250*150 | 3.5-12.0 |
| 250*250 300*300 400*200 350*350 350*300 | 250*200 300*200 350*200 350*250 450*250 400*300 500*200 | 4.5-15.75 |
| 400*400 280*280 450*300 450*200 | 400*350 400*250 500*250 500*300 400*600 | 5.0-20.0 |
Before-sale service
We can offer one free sample length 20 cm with freight collected, if you want to buy our products and take our price.
After-sale service
Quality/Quantity Claims: The Buyer is entitled to make both quality and quantity claim in writing against the Seller within 90 days after arrival at the port of destination. All claims must be supported by survey reports of recognized first class surveyors within the above mentioned stipulated time frame.
YouFa brand steel pipes have been successfully applied to Three George Project, Pudong International Airport, Capital International Airport, Beijing Olympic Stadium, Shanghai World Expo
Production Capacity
Totally 13 factories with 9000 employees. 62 ERW steel pipe production lines 40 hot dipped galvanized steel pipe production lines 31 square and rectangular steel pipe production lines 9 SSAW steel pipe production lines 25 steel-plastic complex steel pipe production lines 12 hot galvanized square/rectangular pipe production lines 3 national accredited laboratory with CNAS Certificates 1 Tianjin government accreditd technology center
1. Experience: 23 years focus on quality, 2. Strength: The company that can produce 13 million tons welded pipe exclusively in the world. More than 12,600,000 tons and 190,000 tons (Annual production and export volume) 3. Professional teams slove all kinds of your problems, 4. Service: 24 hours services quickly reply during the whole business process and after business, 5. Quality: Reliable and World certified. We have two national CNAS certified laboratories, and cooperated with many big steel plate factories and retesting of raw materials
Exhibitions and booths
Every year we attended exibition at home and abroad, visited customers and also have many customers visiting
Youfa Steel Pipe Cultural Center:
Large amount of stocks
| Main Products | Sizes(OD.) / Dimension | Wall Thickness | Production Lines | Producing Capacity |
| ERW steel pipe | 1/2" · 8" | 0.5mm · 10.0mm | 62 | 1,000,000 tons per year |
| Hot dipped galvanized steel pipe | 1/2"-8" | 0.5mm · 10.0mm | 40 | 1,500,000 tons per year |
| Oil casing pipe | 219mm-2020mm | 5.0mm · 28mm | 9 | 150,000 tons per year |
| SSAW steel pipe | ||||
| Square/rectangular steel tube | 10x10 · 800x800mm | 0.5mm · 20mm | 31 | 800,000 tons per year |
| 10x20 · 800x600mm | ||||
| Hot-dip galvanized square/rectangular steel tube | 10x10 · 200x200mm | 0.5mm · 15.0mm | 12 | 250,000 tons per year |
| 10x20 · 250x150mm | ||||
| Seamless steel pipe | 1/2"-40" | sch10, sch40, sch80,sch160 | 2 | 100,000 tons per year |
| Steel-plastic complex steel pipe | 1/2" · 12" | 1.5mm · 10.0mm | 25 | 100,000 tons per year |
1. ERW Steel Pipe
Size: OD 1/2"-10" Thickness: 1.5mm-10mm Length:6m
2.ERW Hot-dipped Galvanized Steel Pipe
Size: OD 1/2"-10" Thickness: 1.5mm-10mm Length:6m Zine Coating: 30-40μm
3. Square /Rectangular Steel Pipe
Square size: 20*20mm-200-200mm
Rectangular size: 20*40mm-150*250mm
Thickness: 1.5mm-12mm Length:6m/12m
4. SSAW Steel Pipe
Size: OD 8"-80" Thickness: 5mm-35mm Length:6m/12m
1.Q





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Step 1
Payment and order readiness
Minimum order: 10 Units
Payment terms, specifications, and order details are confirmed before preparation begins.
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Step 2
Preparation
35 days
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Step 3
Packaging and dispatch
Air + Express via FLY Logistics · Approx. shipping fee: $ 20.00 for 10 metric · Transit time: Est. 8-9 days
Final packing, freight, and delivery dates are confirmed before dispatch.
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