Specifications

1.Grade:10#,20#.35#,45#,Q345,16Mn,25Mn,27SiMn,42CrMo,Aisi1020,Aisi1045,St45,St52etc
2.ID:30-250mm
3.Supply condition:BK+S

Commodity name: aisi 1020 cold drawn seamless steel tub

 

Parameter:

 

1.Raw material:10#,20#,35#,45#,Q345,16Mn,25Mn,27SiMn,42CrMo,Aisi1020,Aisi1045,st35,St45,St52etc

 

2.ID:30-250mm

3.ID tolerance:H8,H9 Surface roughness:Ra 0.02— 0.4μm

 

4. Final supply condition:cold drawn and stress-relieved(BK+S)

5. Machining allowance:0.5-1.5mm

 

6.Wall thickness:10%×ID

 

 

Dimensions tolerance

 

OD(mm)	ID (mm)	Tolerance
		OD (mm)	ID (mm)	Wall thickness deviation (mm)	Ovality (mm)	Curvature(mm/m)
40-74	30-65	±.01	-0.3,-0.5	≤0.5	≤0.1	0.3
74-98	65-85	±.01	-0.4,-0.6	≤0.5	≤0.15	0.3
100-116	85-100	±.02	-0.4,-0.6	≤0.6	≤0.15	0.3
124-134	110-115	±.02	-0.6,-0.8	≤0.6	≤0.20	0.3
140-158	120-135	±.02	-0.7,-0.9	≤0.8	≤0.20	0.3
165-176	140-150	±.02	-0.7,-0.9	≤0.8	≤0.20	0.3
188-203	160-180	±.02	-0.7,-0.9 Honed	≤0.8	≤0.20	0.3

 

 

Tolerance

on ID

 

No.	Inside diameter(mm)	ID machining allowance(mm)
1	50-80	0.5-0.8
2	81-125	0.7-1.1
3	125-200	0.9-1.2
4	200-250	1-1.5
Other dimension can be customized

 

Commercial length

 

No.	ID Min.(mm)	Length(mm)
1	50	700—2000
2	63	700—3000
3	80	700—4000
4	>90	700—6000
Other dimension can be customized

 

Delivey conditions:

• Standard packing with plastic caps and strapped bundles.
• Commercial length 2000~10500mm,custom lengths upon request
• Surface protection

About our service:

1.cargo track service during transporting and feedback service after cargo is loaded on board

 

2.flexible terms of payment by T/T and L/C

3.big discount for repeat customers

4.smooth delivering procedure

 

we can supply all kinds of steel pipes such as hot rolled seamless steel pipes ,cold drawn seamless steel pipes,honed pipes,cold drawn welded tubes(DOM tubes).

 

Welcome to inquiry at any time, we will try our best to serve you.

 

Management System Certification:

 

 

 

Production Process:

• Pretreatment :  Acid cleaning- Parkerizing

 

• Cold drawn/cold rolled

• Annealing furnace—— stress-relieving (+SR)

 

• Straightener—— Straightening/ Leveling

•  Straightness inspecting

• Dimension inspecting

  

• Sawing off not good parts

 

• Lathe

• Surface Polishing

• CNC Skiving Roller Burnishing Machine——honing
  

• Finished Products

• Application:Hydraulic cylinder tubes