
BS6323-3 HFS3 HFS4 HFS5 HFS8 Hot Finish Seamless/Rolling Steel Tubes, Automotive Tubes
Standard: BS6323-3 Seamless and Welded steel tubes for automobile,
mechanical and general engineering purposes
Part 3: Specific requirements for hot 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.
Delivery condition:
The tubes are supplied in the hot finished condition
Note: At the option of the manufacturer a normalizing or other heat treatment may be carried out.
Design | Chemical Compositions( ladle analysis) | Mechanical properties | ||||||
C | Si | Mn | P | S | Re | Rm | A | |
max. | max. | max. | ||||||
% | % | % | % | % | N/mm2 | N/mm2 | % | |
HFS 3 | 0.20max. | 0.35 | 0.90max. | 0.050 | 0.050 | 215 | 360 | 24 |
HFS 4 | 0.25max. | 0.35 | 1.20max. | 0.050 | 0.050 | 235 | 410 | 22 |
HFS5ab | 0.23max. | 0.50 | 1.50max. | 0.050 | 0.050 | 340 | 490 | 20 |
HFS 8 | 0.40 to 0.55 | 0.35 | 0.50 to0.90 | 0.050 | 0.050 | 340 | 540 | 18 |
NOTE:Except for grade 8,welding of tubes of these grades does not
require special techniques but care should be taken and welding
should be carried out in accordance with the guidance given in the
appropriate British Standards for welding,e.g. BS 5135.
Welding of grade 8 may require special techniques aGrain refining
elements may be added to this grade at the option of the
manufacturer.
For thicknesses in excess of 30 mm it is permissible for the
minimum yield strength to be reduce by 5 N/mm2"
Outside diameter | Thicknesses | |||||||
Minimum thickness | Thicknesses in common usage | maximum thickness | ||||||
mm | mm | mm | mm | mm | mm | mm | mm | mm |
33.7 | 3.2 | 3.2 | 4.0 | 5.0 | 6.3 | |||
38.0 | 3.2 | 3.2 | 4.0 | 5.0 | 5.6 | 6.3 | ||
42.4 | 3.2 | 3.2 | 4.0 | 5.6 | 7.1 | |||
48.3 | 3.2 | 3.2 | 4.0 | 5.0 | 5.6 | 7.1 | ||
60.3 | 3.2 | 4.5 | 5.0 | 5.6 | 6.3 | 11 | ||
76.1 | 3.2 | 4.5 | 5.6 | 6.3 | 12.5 | |||
88.9 | 4.0 | 4.5 | 5.0 | 5.6 | 6.3 | 16 | ||
101.6 | 4.5 | 5.0 | 5.6 | 6.3 | 16 | |||
114.3 | 4.5 | 5.0 | 5.6 | 6.3 | 8.0 | 28 | ||
127.0 | 4.5 | 5.0 | 5.6 | 6.3 | 8.0 | 28 | ||
139.7 | 4.5 | 5.0 | 5.6 | 6.3 | 8.0 | 10.0 | 32 | |
168.3 | 5.0 | 5.0 | 5.6 | 6.3 | 7.1 | 8.0 | 10.0 | 40 |
193.7 | 5.0 | 5.6 | 6.3 | 8.0 | 10.0 | 12.5 | 45 | |
219.1 | 5.0 | 5.6 | 6.3 | 8.0 | 10.0 | 12.5 | 55 | |
244.5 | 6.3 | 6.3 | 7.1 | 8.0 | 10.0 | 12.5 | 60 | |
273 | 6.3 | 6.3 | 7.1 | 8.0 | 10.0 | 12.5 | 70 | |
323.9 | 6.3 | 6.3 | 7.1 | 8.0 | 10.0 | 12.5 | 80 | |
355.6 | 8.0 | 8.0 | 10.0 | 12.5 | 90 | |||
406.4 | 8.0 | 10.0 | 12.5 | 100 | ||||
457 | 9.5 | 10.0 | 12.5 | 100 |
NOTE Outside diameters and thicknesses other than those listed are
available by agreement between purchaser and manufacturer.For
sectional properties including mass per unit length,see appendix B
of BS 6323-1:1982
Note: Special steel grade is also available, according to customer
request.
Publications referred to:
BS3601, Steel pipes and tubes for pressure purposes: carbon steel with specifed room temperature properties
BS 3602, Specifications for steel pipes and tubes for pressure purposes: carbon and carbon manganese steel with specified elevated temperature properties.
BS 3603, Specification for steel pipes and tubes for pressure purposes: carbon and alloy steel with specified low temperature properties
BS3604, Specification for steel pipes and tubes for pressure purposes: ferritic alloy steel with specified elevated temperature properties.
BS3605, Seamless and welded austenitic stainless steel pipes and steel tubes for pressure purposes
BS4360, Specification for weldable structural steels
BS4848, Hot-rolled structrual steel sections
BS4848-2, Hollow sections
BS5135, Metal-arc welding of carbon and carbon manganese steels
BS6323, Specification for seamless and welded steel tubes for automobile, mechanical and general engineering purposes
BS6323-1, General requirements
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!