circular hollow sections galvanized erw pipe Used for Natural Gas, Petroleum,
water & sewage, and pipe systems
water & sewage, and pipe systems
Product name: Galvanized Steel Pipes
Out diameter: 21.3mm-610mm, 1/2"-24"
Wall Thickness: 1.8mm-20mm, SCH 5S, SCH 10S, SCH10, SCH20, SCH30, SCH40S, STD, SCH40, SCH60, SCH80S, XS, SCH80 etc.
Length: 1m-24m
Standard: API 5L, API 5CT, ASTM A53, ASTM A252, ASTM A500, ASTM A795, BS1387, BS1139, EN10255, EN10219, EN10217, EN39, DIN2440/2444, ISO3183, ISO11960, JISG3444, JISG3454 etc.
Quality grade: First class, prime, newly produced, secondary, stock etc.
Material/steel grade:
A, B, X42, X46, X52, X56, X60, X65, X70, L175, L175P, L210, L245, L290, L320, L360, L390, L415, L450, L485, BR, X42R, BN, X42N, X46N, X52N, X56N, X60N, BM, X42M, X46M, X52M, X56M, X60M, X65M, X70M, X80M, X90M, X100M, L245N, L290N, L320N, L360N, L390N, L415N, L245M, L290M, L320M, L360M, L390M, L415M, L450M, L485M, L555M, L625M, L690M, H40, J55, K55, M65, L80, C95, N80, Q125, S235GT, S195T, Grade 1, Grade 2, Grade 3, ST33-2, St33, St37, St42, St34-2, St37-2, St42-2, St52-3, P195, P235, P265, S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H, S275NH, S275NLH, S355NH, S355NLH, S460NH, S460NLH, S275MH, S275MLH, S355MH, S355MLH, S420MH, S420MLH, S460MH, S460MLH, STK290, STK400, STK490, STK500, STK540, STPG370, STPG410 etc.
End: Plain end, beveled, cut square, grooved, threaded and coupling, etc.
Finish: Bare, varnished, black lacquer, Bitumen Coating, zinc coating, anti-corrosion coating, 3PE, FBE, Epoxy, Cement Mortar, as per customer's requirement
Packing: Small sizes packed by steel strips into bundles, big sizes in loose pieces; Can be packed as customers' special requirements
Test: Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test.
Mill Test CertificateEN 10204/3.1B
Application-: Line pipe for use in pipeline transportation systems in the petroleum and natural gas industries
- for use as casing and tubing for wells, screwed and socketed steel tubes and tubulars and for plain end steel tubes
- suitable for welding or for screwing to BS21 pipe threads, loose steel tubes, scaffolds
- used for the conveyance of fluids as well as for other applications, applies to pipe piles in which the steel cylinder acts as a permanent load-carrying member, or as a shell to form cast-in-place concrete piles
- for welded, riveted, or bolted construction of bridges and buildings, and for general structural purposes
- suitable for nominal pressure 25 for liquids and nominal pressure 10 for air and non-hazardous gases
- pressure purposes
- applies to structural hollow sections
- general structure purpose and pressure service etc.
| DN | Diameter | SCH40 (6m/5.8m) | SCH80(6m/5.8m) | SCH160(6m/5.8m) | |||
| INCH | (mm) | Wall Thickness (mm) | Unit Weight (kg/piece) | Wall Thickness (mm) | Unit Weight (kg/piece) | Wall Thickness (mm) | Unit Weight (kg/piece) |
| 1/4" | 13.7 | 2.24 | 3.79 | 3.02 | 4.80 | ||
| 3/8" | 17.1 | 2.31 | 5.04 | 3.20 | 6.60 | ||
| 1/2" | 21.3 | 2.77 | 7.62 | 3.73 | 9.72 | 4.78 | 11.7 |
| 3/4" | 26.7 | 2.87 | 10.14 | 3.91 | 13.2 | 5.56 | 17.4 |
| 1" | 33.4 | 3.38 | 15.00 | 4.55 | 19.44 | 6.35 | 25.44 |
| 1-1/4" | 42.2 | 3.56 | 20.34 | 4.85 | 26.82 | 6.35 | 33.66 |
| 1-1/2" | 48.3 | 3.68 | 24.30 | 5.08 | 32.46 | 7.14 | 43.5 |
| 2" | 60.3 | 3.91 | 32.64 | 5.54 | 44.88 | 8.74 | 66.66 |
| 2-1/2" | 73.0 | 5.16 | 51.78 | 7.01 | 68.46 | 9.53 | 89.52 |
| 3" | 88.9 | 5.49 | 67.74 | 7.62 | 91.62 | 11.13 | 128.1 |
| 3-1/2" | 101.6 | 5.74 | 81.42 | 8.08 | 111.78 | ||
| 4" | 114.3 | 6.02 | 96.42 | 8.56 | 133.92 | 13.49 | 201.24 |
| 5" | 141.3 | 6.55 | 130.62 | 9.53 | 185.82 | 15.88 | 294.66 |
| 6" | 168.3 | 7.11 | 169.56 | 10.97 | 255.36 | 18.26 | 405.36 |
| 8" | 219.1 | 8.18 | 255.3 | 12.70 | 387.84 | 23.01 | 667.62 |
| 10" | 273.0 | 9.27 | 361.86 | 15.09 | 576.06 | 28.58 | 1033.98 |
| 12" | 323.8 | 10.31 | 478.38 | 17.48 | 792.48 | 33.32 | 1432.56 |
API 5L Wall Thickness Tolerance
| Wall thickness (mm) | Tolerance (mm) (a) |
| Seamless pipe (b) | |
| WT ≤4.0 | +0.6mm -0.5mm |
| 4.0<WT<25mm | +0.150*WT -0.125*WT |
| WT≥25.0 | +3.7mm -3.0mm |
| welded pipe (c .d ) | |
| WT≤5.0mm | ±0.5mm |
| 5.0<WT<15mm | ±0.5mm*WT |
| ≥15mm | ±1.5mm |
Galvanized pipe ends could be threaded, screwed and sockeded. it was used for water pipe:
The pipe ends could also be grooved, it was used for fire fighting pipes:
Customized Process type for API ERW / Seamless pipe:
1. Marking : API 5L / ASTM A53 Size * Length
2. Plain ends / 2" above Bevelled ends / plastic cap protection
3. Grooved ends
4. Water proof wrapped / In break bulk vessel
Packing & Loading:
Production range details:
| Main Products | Size | Wall Thickness | Production Lines | Producing Capacity |
| ERW steel pipe | 1/2" -- 8" | 1.5mm--10.0mm | 13 | 1,000,000 tons per year |
| Hot-dipped galvanized steel pipe | 1/2"-8" | 1.5mm--10.0mm | 18 | 1,500,000 tons per year |
| Oil casing pipe, SSAW steel pipe | 219mm-2020mm | 5.0mm--28mm | 5 | 150,000 tons per year |
| Square/rectangular steel pipe | 20x20--400x400mm, 20x40--400x600mm | 1.3mm--20mm | 10 | 800,000 tons per year |
| Hot-dip galvanized square/rectangular steel pipe | 20x20--200x200mm, 20x40--250x150mm | 1.5mm--7.5mm | 3 | 250,000 tons per year |
| Steel-plastic complex steel pipe | 1/2"--12" | 1.5mm--10.0mm | 9 | 100,000 tons per year |
Company's information: 
Tianjin Youfa Steel Pipe Group Co. was founded on July 1st,2000,with the headquarters located at the largest steel pipe
production base in China-Daqiuzhuang Village,Tianjin City;
- produced over 15million tons of various steel pipes in 2017;
- The largest welded steel pipe manufacturer in the world, Production and Sales No.1 for 13 consecutive years in China.
- Products exported to over 86 countries and regions,the Top 500 Enterprises in China;
- has formed four production bases in Tianjin City, Tangshan City, Handan City and Shanxi Province;
- Tianjin Youfa International Trade Co., is a subsidiary of YOUFA Steel Pipe Group,located in Tianjin City.Company
- has 55 professional talents. In order to provide personalized service for foreign businessmen, we have opened
- a processing factory of 10,000 square meters;
- Products cover ERW Steel Pipe, Hot Dipped Galvanized Steel Pipe, Square and Rectangular Steel Pipe,Steel Pipe
- of Lining Plastic,Plastic-coated Steel Pipe, Spiral Steel Pipe, Highway Materials.
TOP 500 ENTERPRISES IN CHINA
Certificates:
Tianjin Youfa Steel Pipe Group Co., have acquired certificates of API 5L/5CT, ISO9001, ISO14001, ISO18001,
EN10219, FPC and UL / FM quality system.
I take part the exhibition in all over the world:
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TIANJIN YOUFA INTERNATIONAL TRADE CO.,LTD
Address: Daqiuzhang Town,Jinghai Distr.,Tianjin City, China 300120