API 5L Gr B Cold Drawn Precision Seamless Steel Pipe

• Customization: Available
• Inspection: SGS BV
• Packing: Wooden Box
• Model NO.: Outer Diameter: 1/8"-36"(10.3mm-914.4mm)
• Advantage: Rich Experience
• Keyword: 304 Wedge Wire Screen Plate
• Feature: Corrosion Resistance
• Temperature Classification: Low Temperature Piping
• MPa Classfication: Low Pressure Piping
• Material: Carbon Steel
• Standard: ASTM, GB, API, DIN, JIS
• Cross-Section Shape: Round
• Connection Type: Welding
• Diameter: 10mm -500mm
• Medium: Gas Oil
• Transport Package: Bundle
• Specification: OD: 10mm -500mm; THK: 2-50mm
• Trademark: datang
• Origin: China
• HS Code: 7304193000
• Production Capacity: 800000ton/Year
• Package Size: 1.00cm * 1.00cm * 1.00cm
• Package Gross Weight: 100.000kg

Product Description

API 5L Gr B Cold Drawn Precision Seamless Steel Pipe
Outer diameter: 10mm -500mm 
Wall thickness: 2-50mm
Material: ST52, Q345B, CK20, CK45, SAE1026
Standard: GB/T8713-88, GB/T3639-2009, DIN2391, EN10305
Cold Drawn Tube can be produced according to the demands of costumers that the degree of precision can reach H9/H11.

Material & Chemical Composition
 DIN2391 standard ST52, EN10305 standard E355, 16Mn, ASTM A106B, C20/20#, CK45
Steel Grade: St52; Ck20; Ck45; E355
Standard Item: GB/T 3639-2009, DIN 2391, En 10305,GB/T8713-88
ID: 10-500
Wt Tolerance: -5%/+5%
Trademark: Gano
Transport Package: in Bundles, Internal and External Oil Coating
Specification: ID from 10-500mm
API 5L Gr B Cold Drawn Precision Seamless Steel Pipe

Material	C	Si	Mn	S(≤)	P(≤)	Cr	Ni	Mo	other
A106B / C20#	0.17-0.23	0.17-0.37	0.35-0.65	0.035	0.035	≤0.25	≤0.30		Cu≤0.25
CK45#	0.42-0.50	0.17-0.37	0.50-0.80	0.035	0.035	≤0.25	≤0.30		Cu≤0.25
Q345B	≤0.20	≤0.55	1.00-1.60	0.040	0.040	V:0.02-0.15	Nb:0.015-0.06	Ti:0.02-0.20	Alt≥0.015
ST52 E355 16Mn	≤0.20	≤0.55	1.00-1.60	0.045	0.045	V:0.02-0.15	Nb:0.015-0.06	Ti:0.02-0.20	16Mn
25Mn	0.22-0.30	0.17-0.37	0.70-1.00	0.035	0.035	≤0.25	≤0.25
27SiMn	0.24-0.32	1.10-1.40	1.10-1.40	0.030	0.030
42CrMo	0.38-0.45	0.17-0.37	0.50-0.80	0.025	0.025	0.90-1.20		0.15-0.25

The process begins with solid steel rounds, or billets, being cut to a specified length and sent through a walking-beam reheat furnace, where temperatures reach nearly 2,300°F.

After exiting the reheat furnace, the preheated rounds are turned into a tube shell in the rotary piercing mill as the billets are cross-rolled between two barrel-shaped rolls at a high speed.

The seamless shells enter mandrel mill, where they are rolled over a retained mandrel to provide the needed OD size and wall thickness for the next process. The process is carefully monitored using a state-of-the-art hot-wall measuring system.

The shells are then reheated for final forming in a 24-stand stretch-reducing mill, where outside diameters are formed to customers' exacting specifications. Wall thickness is again verified using a hot-wall measuring system.

After being rotated and advanced on the walking-beam cooling bed, the pipes are batch cut and transferred to an in-process storage area, where they are handled by computer-controlled gantry cranes.