Processing form

I.D

Length

Straightness

I.D Tolerance

I.D Roughness

Cold-rolled

20-100

<=10m

0.3-1.0

H7-H9

0.4-1.6

Cold-drawn

76-245

<=12m

0.3-1.0

H7-H9

0.8-1.6

Honed

40-180

<=7m

1000

H7-H9

0.4-0.8

SRB

63-180

<=7m

1000

H7-H8

0.1-0.4

Grade

C(max)

Si(max)

Mn

P

S(max)

ST35

0.17

0.35

>=0.40

0.025

0.025

ST42

0.21

0.35

>=0.40

0.025

0.025

ST52

0.22

0.55

<=1.60

0.025

0.025

Steel

Tensile strength

Yield

Elongation

Hardness HB

20#

530

505

12

175

45#

660

630

9

190

16Mn

595

575

9

190

27SiMn

840

805

7.5

230

Honed Tube/Pipe

ASTM

ASTM A519, A513, A1020, A1026

GB

20# 45# 16Mn Q235B Q345B

JIS

JIS G 3473

DIN

DIN 2391 ST37.2 ST52 ck45 s45c e355

Length:

3-12M or customized

Standard:

ASTM，AISI，JIS，GB， DIN，EN

Surface treatment

Smooth and Bright Surface,Oil Dipped

Technique

Cold/Hot rolled, Cold-Drawn， or Hot Forged

Heat Treatment

Annealed; Quenched; Tempered

price terms

FOB,CRF,CIF,EXW all acceptable

Delivery Detail

inventory About 3-5； custom-made 10-15；rding to order's quantity.

Loading port

any port in China

Packing

standard export packing (inside:water proof paper,outside:steel covered with strips and pallets)

Payment Terms

T/T, L/C at sight,West Union,D/P,D/A,Paypal

Container size

20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)

40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)

40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)