Cold Finished Seamless Mechanical Tubing Bs6323-4 Standard For Auto Industry

Basic Information
Place of Origin: China
Brand Name: TORICH
Certification: TS16949 ISO9001 ISO 14001
Model Number: BS6323-4
Minimum Order Quantity: 5 Ton
Price: negotiable
Packaging Details: Packing in wooden, hexagonal box or other seaworthy ways
Delivery Time: 30 days
Payment Terms: T/T L/C D/P D/A WesternUnion MoneyGram Others
Supply Ability: 60000 Ton/Year
Detail Information
Standard: BS6323-4 Brand: TORICH
Material: Carbon Steel And Alloy Steel Production: Cold Drawn
Heat Treatment: BK, +N, Q&T MTC: EN10204 3.1B
High Light:

seamless steel pipe


precision stainless steel tubing

Product Description

BS6323-4 Cold Finished Seamless Steel Tube With Grade CFS1 CFS2 CFS3 CFS4 CFS5 42CrMo4


Standard: BS6323-4 Seamless and Welded steel tubes for automobile,mechanical and general engineering purposes
Part 4: Specific requirements for cold finished seamless steel tubes

Applications: for Auto industry / for machinery use/mechanical and general engineering purposes

Size range: O.D.:6-280mm W.T.:1-30mm L:max12000mm

Method of manufacture:

The tubes are manufactured by a seamless process and shall be cold finished

It is permissible for cold finished tubes to have on internal and external surfaces an adherent layer of residual to subsequent processing, then their removal shall be the subject of an agreement between the manufacturer and the purchaser.


Delivery Condition:

The tubes are supplied in one of the following condition:

a. Cold finished/hard (cold finished as drawn) : BK

b. Cold finished/soft (lightly cold worked ): BKW

c. Annealed: GBK

d. Annealed (including de-scaling): GZF

e. Normalized: NBK

f. Normalized ( including de-scaling): NZF



Flattenning tests

Leak tightness test- Eddy current test


Chemical Compositions( ladle analysis)      
C Si Mn Pmax. Smax. Cr Mo
  % % % % % % %
CFS 3 0.20 max. 0.35 max. 0.90max. 0.050 0.050 __ __
CFS 3Aa 0.20 max. 0.10 to 0.35 0.60 to 1.00 0.050 0.050 __ __
CFS 4 0.25 max. 0.35 max. 1.20 max. 0.050 0.050 __ __
CFS 5b 0.23 max. 0.50 max. 1.50 max. 0.050 0.050 __ __
CFS 6 0.30 to0.40 0.35 max. 0.50 to 0.90 0.050 0.050 __ __
CFS 7 0.20 to 0.30 0.35 max. 1.20 to1.50 0.050 0.050 __ __
CFS 8d 0.40 to 0.55 0.35 max. 0.50 to0.90 0.050 0.050 __ __
CFS 9 0.29max. 0.35 max. 1.50max. 0.050 0.050 __ 0.15 to0.25
CFS 10 0.26max. 0.35 max. 0.80max. 0.050 0.050 0.80 to1.20 0.15 to0.30
CFS 11 0.45max. 0.35 max. 1.00 max. 0.050 0.050 0.80 to1.20

0.15 to0.30



Cold Finished Seamless Mechanical Tubing Bs6323-4 Standard For Auto Industry 0
Who We are ?
-------A professional steel pipes materials inventor, manufacturer and solution provider Torich Interational Co.,Ltd is a professional manufacturer and exporter of steel pipes materials.
It is an international marketing and sales company specialized in steel tubes, which holds the factories of Seamless Steel Tubes with Carbon and Alloy Steel Grade, Welded Precision Steel Tubes,DOM Steel Tubes, Seamless & Welded Stainless Steel Tubes with Nickel and Alloy Steel Grade.
Our factory was established since 1997, with the name of Haiyan Sanxin Steel Pipe Co., Ltd. The factories` technicians are of great engineering experience in steel pipe industry for more than 20 years, which are in great command of production technology for Cold Drawing and Cold Rolling. So we have strong technician team and manufacturing capability.

Contact Details

Phone Number : +8613736164628

WhatsApp : +8613736164628