Specifications

1.Raw material:20#.45#,Q345,16Mn,25Mn,27SiMn,42CrMo
2.ID:30-250mm
3.Supply condition:BK+S
4.seamless 45# steel hone tube

Commodity name: Precision seamless 45# steel honed tube H7 H8 H9 tolerance

 

Cold drawn honed tube parameter:

 

1.Raw material:20#.45#,Q345,16Mn,25Mn,27SiMn,42CrMo,etc cold drawn seamless pipes

2.ID:50-250mm

 

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

 

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

•  Finished honed tube