| Product | Carbon Steel Pipe |
| Shape | Round Hollow Section
Square and Rectangular Hollow Section |
| Material | Carbon Steel |
| Grade | Q195 = S195 / A53 Grade A Q235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 / ST42.2 Q355 = S355JR / A500 Grade B Grade C |
| Round Steel Pipe Standards | ASTM A53, API 5L, ASTM A252, ASTM A795, ISO65, DIN2440, BS1387. BS1139, EN10255, EN39, JIS3444, GB/T 3091 & GB/T13793 |
| Square Steel Pipe Standards | ASTM A500, A36, EN10219, EN10210, GB/T 6728, JIS G3466 |
| Surface | 1.Bare/Natural Black
2.Color Painted 3.Oiled with or without wrapped 4.Galvanized / Zinc Coated |
| Ends | Plain ends |
| Special Ends | Round erw steel pipe ends : threaded, beveled, grooved;
Round ssaw steel pipe ends: beveled |
Application:
1.Structure Field:
Construction / building materials steel pipe
Structure pipe
Fence post steel pipe
Solar mounting components
Handrail pipe
Scaffolding pipe
Greenhouse steel pipe
2.Circulation Field：
Fire protection steel pipe
Low pressure liquid, water, gas, oil, line pipe
Irrigation pipe
| Round ERW Welded Steel Pipe size chart | |||||||||
| DN | OD | ASTM A53 GRA / B | ASTM A795 GRA / B | BS1387 EN10255 | |||||
| SCH10S | STD SCH40 | SCH10 | SCH30 SCH40 | LIGHT | MEDIUM | HEAVY | |||
| MM | INCH | MM | (mm) | (mm) | (mm) | (mm) | (mm) | (mm) | (mm) |
| 15 | 1/2” | 21.3 | 2.11 | 2.77 | - | 2.77 | 2 | 2.6 | - |
| 20 | 3/4” | 26.7 | 2.11 | 2.87 | 2.11 | 2.87 | 2.3 | 2.6 | 3.2 |
| 25 | 1” | 33.4 | 2.77 | 3.38 | 2.77 | 3.38 | 2.6 | 3.2 | 4 |
| 32 | 1-1/4” | 42.2 | 2.77 | 3.56 | 2.77 | 3.56 | 2.6 | 3.2 | 4 |
| 40 | 1-1/2” | 48.3 | 2.77 | 3.68 | 2.77 | 3.68 | 2.9 | 3.2 | 4 |
| 50 | 2” | 60.3 | 2.77 | 3.91 | 2.77 | 3.91 | 2.9 | 3.6 | 4.5 |
| 65 | 2-1/2” | 73 | 3.05 | 5.16 | 3.05 | 5.16 | 3.2 | 3.6 | 4.5 |
| 80 | 3” | 88.9 | 3.05 | 5.49 | 3.05 | 5.49 | 3.2 | 4 | 5 |
| 90 | 3-1/2" | 101.6 | 3.05 | 5.74 | 3.05 | 5.74 | - | - | - |
| 100 | 4” | 114.3 | 3.05 | 6.02 | 3.05 | 6.02 | 3.6 | 4.5 | 5.4 |
| 125 | 5” | 141.3 | 3.4 | 6.55 | 3.4 | 6.55 | - | 5 | 5.4 |
| 150 | 6” | 168.3 | 3.4 | 7.11 | 3.4 | 7.11 | - | 5 | 5.4 |
| 200 | 8” | 219.1 | 3.76 | 8.18 | 4.78 | 7.04 | - | - | - |
| 250 | 10” | 273.1 | 4.19 | 9.27 | 4.78 | 7.8 | - | - | - |
| 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 | ||
| Spiral Welded Steel Pipe | |
| Certificate | API 5L Certificate |
| Specification: | Outside Diameter: 219-2032mm |
| Wall Thickness: 5-16mm | |
| Length: 12m or customized | |
| Surface | Bare / Natural black |
| Galvanized | |
| 3PE / FPE | |
| Pipe Ends | Beveled or Plain |
| Steel Grade | Grade B / L245, X42, X52, X60 |
Strict Quality Control:
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. We own UL /FM, ISO9001/18001, FPC certificates
Packing and Delivery:
Packing Details :
1. Round pipe OD 219mm and below, Square pipe OD 300mm and below: In hexagonal seaworthy bundles packed by steel strips, With two nylon slings for each bundles or as clients requirements;
2. Round pipe above OD 219mm, Square pipe above OD 300mm: in bulk;
3. 25 tons/container and 5 tons/size for a trial order;
4. For 20" container the max length is 5.8m;
5. For 40" container the max length is 11.8m.
Delivery Details : Depending on the QTY, normally one month.
About us:
Tianjin Youfa was founded on July 1st, 2000. There are totally about 9000 employees, 13 factories, 293 steel pipe production lines, 3 national accredited laboratory, and 1 Tianjin government accredited business technology center until year 2022.
YOUFA STEEL PIPE GROUP including 13 factories:
Tianjin Production Base—Tianjin Youfa Steel Pipe Group Co.,Ltd .-No.1 Branch;
Tianjin Youfa Steel Pipe Group Co.,Ltd .-No.2 Branch;
Tianjin Youfa Dezhong Steel Pipe Co.,Ltd;
Tianjin Youfa Pipeline Technology Co.,Ltd;
Tianjin Youfa Ruida Traffic Facilities Co.,Ltd;
Tianjin Youfa Stainless Steel Pipe Co., Ltd;
Tianjin Youfa Hongtuo Steel Pipe Manufacture Co., Ltd.
Tangshan Production Base-- Tangshan Zhengyuan Pipeline Industry Co., Ltd. ;
Tangshan Youfa Steel Pipe Manufacture Co.,Ltd;
Tangshan Youfa New Construction Equipment Co., Ltd.
Handan Production Base— Handan Youfa Steel Pipe Co.,Ltd;
Shaanxi Production Base—Shaanxi Youfa Steel Pipe Co., Ltd
Jiangsu Production Base — Jiangsu Youfa Steel Pipe Co., Ltd
Production Capacity:
9000 employees.
89 ERW steel pipe production lines
60 hot dipped galvanized steel pipe production lines
43 square and rectangular steel pipe production lines
9 SSAW steel pipe production lines
27 steel-plastic complex steel pipe production lines
17 hot dip galvanized square and rectangular steel pipe production lines
3 national accredited laboratory with CNAS Certificates
1 Tianjin government accreditd business technology center
1 factory for scaffoldings
1 factory for stainless steel pipe
