
BS6323-6 Seamless Welded Precision Steel Tube Machining 35mm Wall Thickness
Standard for precision steel tube: BS6323-6 Seamless and Welded Steel Tubes for Automobile,Mechanical
and General Engineering Purposes
Part 6: Specific requirements for cold finished electric resistance
welded(including induction welded) steel tubes
Applications for BS6323-6 Seamless and Welded Steel Tubes : Auto Industry Machinery Use Mechanical and General Engineering
Purposes
Size range for BS6323-6 Seamless and Welded Steel Tubes : O.D.:6-350mm W.T.:1-35mm L:max12000mm
Method of Manufacture for BS6323-6 Seamless and Welded Steel Tubes :
The tubes are manufactured from flat rolled strip, longintudinally welded continuously by the passage of an electric current
across the abutting edges without the addition of filler metal.
They are subsequently cold finished normally on both the inside and outside surfaces, where it is permissble to have both an adherent layer of residual lubricant originating from the drawing process and visible traces of the internal weld upset.
If phosphate or other residues are detrimental to subsequent processing, their removal shall be the subject of an agreement between the manufacturer and purchaser.
Publications referred to:
BS 3601 BS 3602 BS 3603 BS 3604 BS 3605 BS 4360 BS 4848
BS 4848-2 BS 5135 BS 6323 BS 6323-1 BS 6363 ISO 4200
Delivery Condition for BS6323-6 Seamless and Welded Steel Tubes :
The tubes are supplied in one of the following condition:
a. Cold finished/hard (cod 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
It is permissible for tubes supplied in the GBK and NBK conditions to be discoloured, but they shall be free from loose scale.
Where tubes, in the GBK condition are required bright annealed, this shall be the subject of an agreement between the purchaser and the manufactuer.
Testing for BS6323-6 Seamless and Welded Steel Tubes:
Flattening test
Drift expanding test
Leak tightness test.
Standard: BS6323-6 Seamless and Welded Steel Tubes for
Automobile,Mechanical and General Engineering Purposes
Part 6: Specific requirements for cold finished electric resistance
welded(including induction welded) steel tubes
Chemical Compositions and mechanical properties | |||||||||||||||||
Design ation | Chemical Compositions( ladle analysis) | Mechanical Properties | |||||||||||||||
C | Si | Mn | P | S | BKc (cold finished/hard) | BKWc (cold finished/soft ) | GBK and GZF (annealed) | NBK and NZF (normalized) | |||||||||
max. | max. | max. | max. | max. | Re min. | Rm min. | A min. | Re min. | Rm min. | A min. | Re min. | Rm min. | A min. | Re min. | Rm min. | A min. | |
% | % | % | % | % | N/m m2 | N/m m2 | % | N/m m2 | N/m m2 | % | N/m m2 | N/m m2 | % | N/m m2 | N/m m2 | % | |
CEW1a | 0.13 | __ | 0.60 | 0.050 | 0.050 | 320 | 400 | 6 | 245 | 350 | 10 | 150 | 270 | 27 | 155 | 280 | 25 |
CEW2a | 0.16 | __ | 0.70 | 0.050 | 0.050 | 355 | 420 | 6 | 260 | 370 | 10 | 160 | 300 | 27 | 195 | 320 | 25 |
CEW3a | 0.20 | 0.35 | 0.90 | 0.050 | 0.050 | 360 | 450 | 6 | 280 | 400 | 9 | 170 | 340 | 26 | 215 | 360 | 24 |
CEW4b | 0.25 | 0.35 | 1.20 | 0.050 | 0.050 | 415 | 520 | 5 | 315 | 450 | 8 | 200 | 400 | 24 | 235 | 410 | 22 |
CEW5b | 0.23 | 0.50 | 1.50 | 0.050 | 0.050 | 480 | 600 | 4 | 385 | 550 | 6 | __ | __ | __ | 340 | 490 | 20 |
Tolerance on diameter | ||
Diameter | Tolerance | |
Over | Up to and including | |
mm | mm | mm |
30 | ±0.10 | |
30 | 50 | ±0.15 |
50 | 70 | ±0.20 |
70 | 90 | ±0.25 |
90 | 110 | ±0.30 |
110 | 130 | ±0.35 |
130 | 160 | ±0.45 |
160 | 190 | ±0.55 |
190 | 220 | ±0.65 |
220 | 250 | ±0.75 |
Tolerance on specified cut lengths | |||
Specified cut length | Tolerance(mm) | ||
over | up to and including | ||
mm | mm | mm | |
500 | + | 2 | |
- | 0 | ||
500 | 2000 | + | 3 |
- | 0 | ||
2000 | 5000 | + | 5 |
- | 0 | ||
5000 | 7000 | + | 10 |
- | 0 | ||
7000 | __ | by agreement | |
NOTE Closer tolerances may be obtained by agreement between the purchaser and manufacturer. | |||
Distance between platens for flattening test | |
Designation | Distance between platens |
% | |
CEW 1 | 66 |
CEW 2 | 75 |
CEW 3 | 85 |
CEW 4 | 85 |
CEW 5 | 85 |
Minimun expansion for drift expanding test | ||
Designation | Expansion minimun for tube thickness | |
Up to and including 4mm | Over 4 mm up to and including 8 mm | |
% | % | |
CEW 1 | 12 | 8 |
CEW 2 | 12 | 8 |
CEW 3 | 10 | 6 |
CEW 4 | 8 | 5 |
CEW 5 | 8 | 5 |
Production Pictures for BS6323-6 Seamless and Welded Steel Tubes
Production Process for BS6323-6 Seamless and Welded Steel Tubes
Production Workshop for BS6323-6 Seamless and Welded Steel Tubes
FAQ for Precision Steel Tube
1. who are we?
TORICH is not only professional manufacturer and exporter, but also
international marketing and sales company in the field of steel
tubes from China. Our factory was established in 1997, with the
name of Haiyan Sanxin Steel Pipe Co., Ltd. Our technicians are
equipped with great engineering experience in steel pipe industry
for more than 22 years, they have great command of production
technology for Cold Drawing and Cold Rolling, as well as heat
treatment and inspection. So we have a strong technician team and
manufacturing capability.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Stainless Steel/Carbon Steel/AlloySteel,Titanium,Copper/Brass,etc.
4. what services can we provide?
Accepted Delivery Terms:
FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express
Delivery,DAF,DES;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,D/P D/A,MoneyGram,Credit
Card,PayPal,Western Union,Cash,Escrow;
Language
Spoken:English,Spanish,Japanese,Portuguese,German,Arabic,French,Russian,Korean,Hindi,Italian
TORICH INTERNATIONAL LIMITED
Who We are ?
-------A professional steel pipes materials inventor, manufacturer
and solution provider
Torich International Limited 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.
What products we do?
------- Invent and produce various Precision Steel Pipes
Our steel pipes cover the following ranges:
Seamless Precision Steel Pipes
Bearing Steel Tubes
Welded Precision Steel Pipes, with DOM production
Seamless Heat Exchanger Steel Pipe
Seamless Boiler Steel Pipes
Honed Tubes
Hydraulic Cylinder Steel Tubes
Hydraulic Telescopic Cylinder Tubes
Seamless Structural Steel Pipes
Seamless Mechanical Steel Pipes
Seamless Alloy Steel Tubes & Pipes
Seamless Stainless Steel tubes
Welded Stainless Steel Tubes
Seamless Stainless Steel Tubes & Pipes
Welded Stainless Steel Tubes & Pipes
Seamless Carbon Steel Tubes & Pipes
Nickel Alloy Steel Tubes & Pipes
What TORICH do:
1. Producing Steel Tubes
2. Selling both on Domestic and International Market
3. Precisely Targeting Customers’ Requirement- Sourcing the right
factory for right products for Customers
Products Application:
Oil Cylinders
Air Cylinder,
Automotive Cylinder Liners
Boilers, Pressure Vessels
Shell & Heat Exchangers
Jack Lifting
Telescopic Systems
Pneumatic Cylinders
Agricultural Machineries
Size range is:
O.D. 4-350mm,
W.T. 0.5-30mm,
Length: according to customer’s requirement and agreement
Steel Grade:
Carbon Steel Grade:
ST35.8, ST37.0, ST44, ST52;
E155, E195, E215, E235, E275, E355;
195GH, P235GH, P265GH, P195TR1, P195TR2, P235TR1, P235TR2, P265TR1,
P265TR2;
SAE1010, SAE1020, SAE1026, SAE1035, SAE1045;
Carbon steel tube: SA178, A179, A192, A210, SA213, SA214, etc.
Alloy Steel Grade:
T2, T5, T9, T11, T12, T17, T21, T22, T91,T92, 15Mo3,16Mo3,
13CrMo44;
SAE4130, SAE4140, 40Cr, 40Cr4, 10CrMo910, 12CrMo910, 11CrMo910,
25CrMo4, 35CrMo, 35CrMo4, 42CrMo4, 34CrMo4, 20MnV, 20MnV6,20CrMn;
Carbon steel tube: A179,A192,A210,DIN17175,etc.
Bearing Steel Grades:
GCr15 52100 suj2 suj3 100Cr6 SKF3S SKF3S 20CrNiMo 8620H 4118H;
Nickel Alloy Grade:
N02200/2201, N04400, N06600, N06601, N06625, N06852, N06219,
N06690, N08800/8810/8811, N08825, N08028, N08535, N08904, N08925,
N08926, N010276, N06022, etc.
Austenitic/Super Austenitic Stainless Steel Grade:
304/304L, 316/316L, 314, 321, 347H, 316Ti, 316LMod, 317L/N, 310S,
253MA, 330, 904L, S31254, XM-19, etc.
Ferrite/Martensite Stainless Steel Grade:
TP410, TP405, TP420, TP430, TP430Ti, TP403, TP409, TP444, TP439,
TP446, etc.
Duplex/Super Duplex Stainless Steel Grade:
S31803, S32304, S31500, S32550, S32750, S32760, etc.
Corporate Culture:
We focus on Quality First, Quality Traceability, and Quality
Stability!
We focus on Customer First, People First, and Quality-Oriented!
Success:
First factory started in 1997, in the name of Torich , now covers
50000 square meters of factory building, with more than
100employees, and over 45 million RBM assets.
In 2008, we started the company of Torich International
Limited for international business and marketing.
Welcome partners from all over the world for long term cooperation!