GB/T8162 Q235 Q345 Q195 Carbon Seamless Steel Pipe For Fluid Tube

GB/T8162 Q235 Carbon Seamless Steel Pipe

GB/T8162 Q235 Carbon Seamless Steel Pipe

Steel Grade/Steel Material: Q345 Q195 10# 20#

Steel pipe standard:GB/8162

Characteristic:

Good concentricity

Good OD and ID tolerance

High Precision

Stable quality

Smooth Roughness

TORICH QUALITY ASSURANCE

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

Heat Treatment: Hot Rolling & Cold Drawn

Tolerance of the OD &WT:

OD Tolerance:

Tolerance for wall thickness:

1.Wall thickness tolerance of Hot Rolling steel tube:

2.Wall thickness tolerance of Cold Drawn(Cold Rolled) steel tube:

Bending tolerance:

WT≤15mm, Bending≤1.5mm/m

WT>15mm~30mm, Bending≤2.0mm/m

WT>30mm/OD≥351mm, Bending≤3.0mm/m

Ovality and Wall unevenness:

The ovality and wall unevenness should be no more than 80% of the OD and wall thickness.(Or according to customer’s request)

Mechanical Properties: