High Precision Seamless Welded Carbon Steel Pipe

• After-sales Service: Support
• Warranty: Support
• Type: Seamless
• Technique: Cold Rolled
• Material: Carbon/Aolly
• Surface Treatment: Black
• Model NO.: A106b/A53b A36 Q195 Q235 Q335 Q345b
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Chemical Industry, Mining
• Section Shape: Round
• Delivery Time: 7-14days
• Payment Term: T/T
• Tolerance: +-1%
• Lodaing Port: Tianjin, Qingdao, Shanghai, etc
• Transport Package: Bundled/Wrapped/Wooden Cased
• Specification: OD60-120mm
• Trademark: Shanshui Special
• Origin: Liaocheng Shandong
• HS Code: 7304113000
• Production Capacity: 100tons Per Month

Product Description

Product Name	Carbon steel seamless pipe
Standard	ASTM A106,ASTM A53,API5L B,ASTM A179,ASTM A210,ANSI B36.10,GB 5310,GB6479,GB9948,GB/T17396GB 3087,GB/T 8162,GB/T8163
Wall Thickness	8-20mm (Or customized according to customer requirements )
Outer Diameter	60-140mm  (Or customized according to customer requirements )
Length	5m-14m,5.8m,6m,10m-12m,12m or as customer's actual reques
Material	A53(A,B),A106(A,B),Q345,16Mn, 10# 20#,45# S235JR, 1010,1020,1030,1040,1050,ASTMA252 Gr.2,Gr.3;  4140 4120 4130 4142 35CrMo 42CrMo 1033 1320 1330 1527 1340 1345 20Mn 35Mn 40Mn 20Mn2 35Mn2 5115 5120 5135 5140 5145 5150 20Cr 30Cr 35Cr 40Cr 45Cr 5120  20CrMnTi 8620 20CrNiMo 4340 40CrNiMoA  52100 GCr15  27SiMn 9260 60Si2Mn 9255 55Si2Mn 6150 50CrVA 440C 9Cr18Mo 3140 3135 40CrNi etc
Pipe Ends	Plain end/Beveled,protected by plastic caps on both ends, cut quare,grooved,threaded and coupling,etc.
Surface Treatment	1. Galvanized,bare 2. PVC,Black and color painting 3. Transparent oil,anti-rust oil 4. According to clients requirement

product performance

 

Mechanical property

Material	Diameter of sample d mm	Heat treatment or condition.	Tensile strength σb Mpa	Point of yield σs Mpa	Ratio of elongation δ %	Reduction of section ψ %	hardness HBW	Shock absorption energy KV2 J
ASTM 4119 GB 12CrMo	d=30	Quenching + tempering	≥410	≥265	≥24	≥60	≤179	≥110
JIS SCM415 GB 15CrMo	d=30	Quenching + tempering	≥440	≥295	≥22	≥60	≤179	≥94
ASTM 4118 GB 20CrMo	d=15	Quenching + tempering	≥885	≥685	≥12	≥50	≤197	≥78
ASTM 4130 GB 30CrMo	d=25	Quenching + tempering	≥930	≥785	≥12	≥50	≤229	≥63
ASTM 4135 GB 35CrMo	d=25	Quenching + tempering	≥980	≥835	≥12	≥45	≤229	≥63
ASTM 4140     GB  42CrMo	d=25	Quenching + tempering	≥1080	≥930	≥12	≥45	≤217	≥63

Chemical Composition (%)

Material	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
ASTM 4119 GB 12CrMo	0.08-0.15	0.17-0.37	0.4-0.7	0.035	0.035	0.4-0.7	0.3	0.3	0.4-0.55
JIS SCM415 GB 15CrMo	0.12-0.18	0.17-0.37	0.4-0.7	0.035	0.035	0.8-1.1	0.3	0.3	0.4-0.55
ASTM 4118 GB 20CrMo	0.17-0.24	0.17-0.37	0.4-0.7	0.035	0.035	0.8-1.1	0.3	0.3	0.15-0.25
ASTM 4130 GB 30CrMo	0.26-0.34	0.17-0.37	0.4-0.7	0.035	0.035	0.8-1.1	0.3	0.3	0.15-0.25
ASTM 4135 GB 35CrMo	0.32-0.4	0.17-0.37	0.4-0.7	0.035	0.035	0.8-1.1	0.3	0.3	0.15-0.25
ASTM 4140 GB 42CrMo	0.38-0.45	0.17-0.37	0.5-0.8	0.035	0.035	0.9-1.2	0.3	0.3	0.15-0.25
ASTM 4142 GB 42CrMnMo	0.4-0.45	0.15-0.35	0.78-1	0.035	0.04	0.8-1.1	0.25	0.35	0.15-0.25

Laboratory testing for steel pipes typically includes the following aspects:

1. Chemical composition analysis: By analyzing the chemical composition of the steel pipe samples, the content of each element can be determined to ensure that the steel pipe material meets the requirements of relevant standards and specifications.

2. Mechanical performance testing: By conducting tests such as tensile testing, impact testing, and hardness testing, the strength, toughness, and hardness of the steel pipe material can be evaluated.

3. Metallographic observation: By using a metallographic microscope, the grain structure, phase content, and grain boundary characteristics of the steel pipe can be observed to evaluate its structural properties.

4. Corrosion performance testing: By conducting tests such as salt spray testing and corrosion rate testing, the corrosion resistance of the steel pipe can be evaluated to ensure its service life in specific environments.

5. Dimension and appearance inspection: The dimension, shape, and surface quality of the steel pipe are inspected to ensure compliance with specified dimensional and appearance requirements.

Our Advantages

1. Precision manufacturing: Cold-drawn seamless steel tubes are manufactured through the cold drawing process, which guarantees dimensional accuracy and smoothness. The surface has high finish, and the inner and outer walls are defect-free, meeting the requirements for high-precision applications.Our tolerance can be guaranteed at ±0.1mm.

2.Excellent mechanical properties: During the manufacturing process of cold-drawn seamless steel tubes, the material undergoes plastic deformation, resulting in grain refinement and improved hardness and strength. Compared to hot-rolled seamless steel tubes, cold-drawn seamless steel tubes have higher tensile strength, compressive strength, and impact resistance.

3.Good surface quality: Due to the characteristics of the cold-drawing process, cold-drawn seamless steel tubes have better surface quality. The surface is smooth and flat, with no obvious scales or oxidation, meeting the requirements for high-quality surface treatment and coating.

4.Wider range of applications: Due to its precision manufacturing and excellent mechanical properties, cold-drawn seamless steel tubes are widely used in industries such as mechanical manufacturing, automotive manufacturing, petroleum and natural gas industries, petrochemical industry, high-temperature and high-pressure fields, and structural engineering.

In summary, cold-drawn seamless steel tubes have advantages such as precision manufacturing, excellent mechanical properties, and a wider range of applications. Therefore, they are widely used in industries with high requirements for tube quality and performance.