JISG3445 STKM11A 12A 12B 12C 13A 13B 13C 15A Drawn Over Mandrel Steel Tube​:

JIS G3445 STKM 15A Drawn Over Mandrel Steel Tube Seamless And Electric Resistance,

which is produced by mandrel and die on the ERW mother tube, with cold drawing and cold rolling processing to achieve final target dimension, with good OD and ID smoothness

Product Name: Carbon steel tubes for machine structural purposes

Japanese Product Name :つぎめがないこうかん

Drawn Over Mandrel Steel Tube Material : STKM 15A or according to customers Specifications

DOM Tubing Application :

Machine Structural Purposes

Machine Auto competent

Furniture

Bicycle

Mechanical parts

Mechanical Elements

Machine elements

1.Drawn Over Mandrel Steel Tube Grade

a. STKM 11A

b. STKM 12 (ABC)

c. STKM 13(ABC)

d. STKM 14(ABC)

e. STKM 15(AC) etc

f. Standard JIS G3445

2. OD:4-60mm, Wall thickness:0.5-7mm

3.Characteristic:The tubes are high precision in tolerance

4.Kindly advise heat treatment requirement if any.

5.STKM 15A Chemical composition % max:

C:0.25-0.35

S:0.35

Mn:0.30-1.00

P:0.04

S:0.04

DOM Steel Tube Delivery Condition:

HR CW SR A N HF

HR:hot rolled

CW:cold worked

SR:stress relieved

A:annealed

N:normalized

HF: hot formed.

Drawn Over Mandrel Steel Tube Mechanical properties:

Tensile strength min470Mpa

Yield Strength min275 Mpa

Elongation min 22%

Note:1. For hot finished seamless steel tube, the outside diameter tolerance No.1 shall be applied.

2.The tolerance on outside diameter of quenched and tempered tubes shall be as agreed upon by the purchaser and manufacturer.

Zhejiang New Era Steel Tube Technology Co., Ltd is one of the best seamless steel tube products manufacturer and exporter in china. Our main products include cold drawn and cold rolled seamless steel tubes .We can manufacture non-standard and special application tubes, also according to the international standards as well. Ningbo Pipeway Trade Co.,Ltd is our branch company for all internation business service for our company.

Our Production equipments including 16 cold drawing lines and 22 cold rolled machines:

We have full testing equipments for different kinds of testing for steel tubes:

Our products can produced as DIN,ASTM,ASME,EN,JIS,BS,GB,GOST,ISO etc international standard 

Precision steel tubes:DIN2391 st52/A519 4130 4140 1026/EN10305-1 E355+N/EN10305-4 E235+N

Boiler steel tubes:ASTM A192/A179/A210 Gr.A/A213;DIN17175 st35.8/EN10216

Seamless Mechanical tubes: ASTM A519, EN10297-1/EN10210 S355J2H

Wire line Drill Rods:BQ,NQ,HQ,PQ XJY750,XJY850 4130+SR 1541

Oil and Gas line pipes:API 5L Grade B,A106 Gr.B,A53 Gr.B,API 5D

Stainless Steel tubes 304,304L,316,316L

Steel pipes and tube Size range:OD 4-300mm,Wt:0.5-30mm

We have 15 years experience of exporting steel tubes and steel pipes , main exporting to American, Europe, Asian, Australia, Africa .

We have cerficate of ISO9001,TS16949,TUV/PED for different market demand: