Limestone Quarry Plant

One of the Top 500 enterprises in China foreign trade

QCCO was approved as a member of “China Association for Contracting Projects Abroad “and granted a membership certificate on Sep 28,2005; “Credibility Rating AAA certificate in Foreign Trade” was granted to QCCO by China Shippers’ Association


Welded Carbon Steel Pipes/Tubes (A53 A106 A252 API 5L Q235


Welded Carbon SteeI Pipes/Tubes 

1. Standards & Grade: API, ANSI, ASTM, DIN 
ASTM A500, EN10219-2, EN10210-20, JISG3444, GB/T6728-2002, 20#, Q195, Q235, Q345, S355, X80, X70, X65, X60, X52, X42, Gr. B, Q235, Q345, 20# 

2. Function: 
Pipes for Industry, medical equipment, construction etc. 

3. Dimension: 
OD: 1/2"-36" 
W. T 1.25mm to 50mm, 
ERW/LSAW/DSAW OD 1/2''-52'' W. T 1.65mm -- 25mm 
SAW/SSAW OD: 219mm -- 3120mm W. T 3mm -- 25mm 
Steel pipe |
Seamless steel pipe|
Carbon steel pipe|
Galvanized steel pipe|
Galvanized pipe
Stainless steel pipe|
4. Surface: Hot dipped galvanized, Oiled or black painted to prevent rust. 

5. Packing: 
Standard Export Packing. 
With or without edge protector (cap), with or wihout light varnish or black oil, bundles with firm steel strip. 

6. Operation principle: 
Superior Quality, Competitive Price, Best Service. Offer Business License/ ISO9001: 2008/ API/ Certificate of Compliance/ Test Report. 

1 Anti-corrosion and high-temperature resistant with black painting 
2 All the production process are made under the ISO9001: 2008 strictly 
3 Payment term: L/C, T/T, money gram. 
4 Trade term: CIF, CFR, FOB. 
5 Delivery short and low cost advantage. 

API pipe|
ERW pipe|
Seamless steel pipe|
Alloy pipe|
spiral steel pipe|
Galvanized pipe|

Standard Grade Tensile strength(Min)Mpa Yield strength(Min)Mpa Enlongation %
ASTM A252 2 415 240 40 x wall(inch) +12.50
3 455 310 32 x wall(inch) +10.00
API5L B 414 241 E=1944A0.2/U0.9(Lo=50.8mm)
X42 414 290
X46 434 317
X52 455 359
ASTM A53 A 330 205 E=1944A0.2/U0.9(Lo=50mm)
B 415 240
GB/T 3091 Q235A 375 235 20
GB/T 3091 Q235B
GB/T 3091 Q345A 510 345 18
GB/T 3091 Q345B

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