Steel Grade

E235, E355, St52.3, 1026,4130, 30CrMo4, Alloy

Delivery status

Hot Rolled, CDS +C, +SR, +N, +Q&T

OD Tolerance

OD< 40 mm

+/-0.2mm

40 to 100 mm

+/-0.3mm

>100mm

+/-0.5mm

WT Tolerance:

OD<100mm

+/-5%

OD>100mm

+/-7.5%

Straightness

<0.5/1000mm　

ID Tolerance

ISO H7,H8, H9　

ID Roughness

Ra 0.2~0.8um　

Length:

5.0-15m

Tolerance for fixed length

LG<500mm

+3mm

500 to 2000mm

+5mm

2000 to 5000mm

+10mm

5000 to 7000mm

+20mm

Stenciling

Mill name + specification + delivery status + Steel Grade + Size + Heat No

Anti Rust

High quality anti rust oil was applied on inside of the tube to ensure no rust inside of the tubes for 6 months

Tubes End

Plain ends with plastic caps on both ends

Packing

Hexagonal packing，wrapped with plastic sheets inside and woven cloth outside of the package