GB/T3639 Seamless Cold Drawn Or Cold Rolled Steel Tubes For Precison Application

Cold Rolled Steel Tubes

Steel Grade/Steel Material:10#, 20#, 45#, Cr-Mo alloy, 16Mn, SAE1010, SAE1020, SAE1045, SKTM11,37Mn5,40Cr, ST35, ST52 etc

Steel pipe standard:GB8713, GB3639, DIN2391, EN10305-1, EN10305-4, JIS-G3445, ASTM A519, ASTM A192, ASTM A179

size:

OD:10.00—110.00mm

WT:1.00—8.00mm

Length: 5.8m, 6m,9m,or as required.

Production Processs:

RAW MATERIAL

↓

INCOMING INSPECTION

↓

STORAGE → CUTTING→HAMMERING → PICKING LUBRICATION → CLEANING → PHOSPHORI CLEAN

                                                                                                                                                                                ↓

ENDS CUTTING←STRAIGHTENING←HEAT TREATMENT↔MIDDLLE CHECK↔ COLD DRAWING ← LUBRICATING

↓

FINAL INSPECTION→BUNDING→STORAGE

Technique:

1) Hot Rolled

2) Cold Drawn

3) Cold Rolled

Characteristic:

Good concentricity

Good OD and ID tolerance

High Precision

Stable quality

Smooth Roughness

TORICH QUALITY ASSURANCE

Application:

1) shock absorber for motorcycle and automobile
2) hydraulic gas cylinder
3) precision machine precision pipe part
4) other auto pipe parts