Grade 20# Cold Drawn Seamless Steel Pipe (OD 5mm~114mm)

• Type: Seamless
• Technique: Cold Drawn
• Material: Carbon Steel, Alloy Steel, Stainless Steel
• Surface Treatment: Annealed, Pickling
• Usage: Pipeline Transport, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Model NO.: IR-C steel pipe
• Tolerance of Size: +/-0.05mm
• Outer Diameter: 18mm~416mm
• Wall Thickness: 0.8mm~20mm
• Length: 6meters, 9meters, 12meters, Random Length
• Surface: Annealed, Straightening, Pickling
• End Processing: Plain Ends
• Transport Package: Bundled, Wrapped, Wooden Cased.
• Specification: ASTM, DIN, GB/T8162
• Trademark: Iron&steel
• Origin: China
• HS Code: 73041990
• Production Capacity: 100 Tons Per Month

Product Description

Cold Drawn High Precision Seamless Steel Pipe (OD 5mm~114mm)
Standard: GB/T8162, GB/T8163, GB/T3639, DIN2391-2
Steel material: 20#(AISI 1020/DIN1.0402 C22), 45#(ASTM 1045,DIN45), 20Cr, Q345B,  10#,, St37, St52, 40cr, 16Mn, C45 etc
Technique: Cold rolling
 Certificate: SGS, TUV SUD, BV, ISO 9001-2011
OD: 21mm~416mm
Wall thickness: 0.8mm~20mm
Toleraance of size: ±0.05mm(outer diameter).
Usage: widely used for mechanical processing, Automobile industry, hydraulic equipments
Advantages of our high precision seamless pipe:
1.       Smaller caliber
2.       Accept small qty order
3.       Good surface treatment
4.       The pipe with superior performance, suitable for mechanical making

Final Supply Conditions
 

Designation	Symbol	Description
Cold finished (hard)	BK	Tubes do not undergo heat treatment following the final cold forming and,thus, have a rather high resistance to deformation
Cold finished (soft)	BKW	The final heat treatment is followed by cold drawing involving limited deformation.Appropriate further processing allows a certain degree of cold forming(e.g. bending expanding).
Cold finished and stress-relleved	BKS	Heat treatment is applled following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree
Annealed	GBK	The last cold forming process is followed by annealing in a controlled atmosphere
Normalized	NBK	The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere

Preicision Seamless Tube Size List
 

OD (mm)	Thickness (mm)	OD (mm)	Thickness (mm)	OD (mm)	Thickness (mm)	OD (mm)	Thickness (mm)
Φ13.1	1.5-3	Φ35.5	1.5-7	Φ46.1	1.5-10	Φ93	1.5-15
Φ19.25	1.5-5	Φ35.9	1.5-7	Φ47.8	1.5-10	Φ19-Φ121	1.5-15
Φ22	1.5-5	Φ36.6	1.5-7	Φ49.2	1.5-10
Φ22.2	1.5-5	Φ38	1.5-8	Φ49.5	1.5-10
Φ25	1.5-6	Φ38.4	1.5-8	Φ52.3	1.5-10
Φ26.3	1.5-6	Φ40	1.5-10	Φ53.8	1.5-10
Φ27	1.5-6	Φ40.2	1.5-10	Φ57	1.5-10
Φ28	1.5-6	Φ40.9	1.5-10	Φ59	1.5-10
Φ30	1.5-6	Φ41.3	1.5-10	Φ60	1.5-11
Φ30.25	1.5-6	Φ41.6	1.5-10	Φ62.5	1.5-11
Φ30.9	1.5-6	Φ42	1.5-10	Φ74	1.5-11
Φ31	1.5-7	Φ43	1.5-10	Φ75	1.5-11
Φ32	1.5-7	Φ44.5	1.5-10	Φ76	1.5-11
Φ35	1.5-7	Φ45.8	1.5-10	Φ89	1.5-15

Chemical Composition

Material	Chemical composition (%)
	C	Mn	P	S	Si	Ni	Cu
20# AISI 1020	0.17~0.23	0.35~0.65	≤0.035	≤0.035	0.17~0.37	≤0.3	≤0.25
45# ASTM1045, DIN45	0.42~0.5	0.5~0.8	≤0.04	≤0.045	0.17~0.37	≤0.25	≤0.25

Mechanical Properties

Steel material	Tensile Strength Mpa	Yield strength Mpa	Elongation %	Hardness	Straightness
20#	≥510	≥245	≥25	≤156HB	0.3~1.0
45#	≥647	≥355	≥16	≤HRC62	0.3~1.0