DIN2391 St37.4/St52/St45 Cold Rolling/Cold Drawn Seamless Steel Pipe Precise Steel Tube

• Customization: Available
• Type: Seamless
• Technique: Cold Drawn
• Model NO.: IR-C
• Material: Carbon Steel, Alloy Steel, Stainless Steel
• Surface Treatment: Bright Surface, Phosphating
• Usage: Hydraulic/Automobile Pipe, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Outer Diameter: 8mm~140mm
• Wall Thickness: 0.8mm~20mm
• Length: 6meters, 9meters, 12meters, Random Length
• Delivery State: Bk, Nbk, Gbk
• Transport Package: Bundled, Wrapped, Wooden Cased.
• Specification: DIN2391
• Trademark: Ironsteel
• Origin: China
• HS Code: 73041990
• Production Capacity: 100 Tons Per Month

Product Description

Cold Drawn Seamless steel Pipe with high precision of size
Standard: GB/T8162, GB/T8163, GB/T3639, DIN2391-2
Steel material: ST52, ST45, ST37.4,20#(AISI 1020/DIN1.0402 C22), 45#(ASTM 1045,DIN45), 20Cr, Q345B, etc
Technique: Cold rolling / Cold drawing
OD: 8mm~140mm
Wall thickness: 0.8mm~20mm
Toleraance of size: ±0.1mm(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

Normal 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

Size tolerance

OD	Standard tolerance			Special tolerance
Outer Diameter	GB/T3639	DIN2391	EN10305	O D	thickness
4mm-20mm	±0.10 mm	±0.08 mm	±0.08 mm	±0.05mm	±0.05mm
20mm-30mm	±0.10 mm	±0.08 mm	±0.08 mm	±0.08 mm	±0.08 mm
31mm-40mm	±0.15 mm	±0.15 mm	±0.15 mm	±0.10 mm	±0.08 mm
41mm-60mm	±0.20 mm	±0.20 mm	±0.20 mm	±0.15 mm	±0.15 mm
61mm-80mm	±0.30 mm	±0.30 mm	±0.30 mm	±0.20 mm	±0.20 mm
81mm-120mm	±0.45 mm	±0.40 mm	±0.40 mm	±0.30 mm	±0.30 mm

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