GB9948 Cold Drawn 20# Alloy Carbon Pipe Petroleum Cracking Steel Tube

GB9948 20# Alloy Carbon Pipe Petroleum Cracking Seamless Steel Tube

Production Method of Steel:

High quality carbon sructural steel and alloy structural steel should be handled through electric arc furnace and refining outside the furnace and vacuum refining processing.,also can be producetd by electroslag heavy solvent method.Stainless steel should use electric arc furnace and refining outside the furnace or oxygen converter refining outside the furnace,also can be producetd by electroslag heavy solvent method.

Production Method of Steel:

Hot Rolling(Extrusion,Expansion)or Cold Drawn(Rolling).

Size:

OD:20-500mm

WT:2-50mm

Length:4-12m

Delivery State:

Steel pipes should be delivery with hot treatment state.

Application:

Petrochemical industry furnace tube

Heat exchanger tube

Seamless steel tube for pressure pipe use

The Tolerances of Outer Diameter and Wall Thickness Unit:mm

Sort Code	Manufacuring Method	Nominal Size		Tolerances
				Common Level	High Level
W-H	Hot Rolling (Extrusion)	Outer Diameter D	≤54	±0.50	±0.30
			>54~325	±1%D	±0.75%D
			>325	±1%D	-
		Wall Thicknass S	≤20	+15%S -10%S	±10%S
			>20	+12.5%S -10%S	±10%S
	Hot Expand	Outer Diameter D	All	±1%D
		Wall Thicknass S	All	±15%S
W-C	Cold Drawn(Rolling)	Outer Diameter D	≤25.4	±0.15
			>25.4~40	±0.20
			>40~50	±0.25
			>50~60	±0.30
			>60	±0.75%D	±0.5%D
		Wall Thicknass S	≤3.0	±0.3	±0.2
			>3.0	±10%S	±7.5%S

Testing items and sampling quantity of steel tubes

Number	Testing items	Sampling quantity
1	Chemical composition	1 sample from each furnace
2	Tensile test	1 sample from each of two steel tubes on each batch
3	Hardness test	3 samples taken on 2 steel tubes on each batch
4	Impact test	All
5	Hydraulic test	1 sample from each of two steel tubes on each batch
6	Flattening test	2 samples taken on 2 steel tubes on each batch
7	Bending test	1 sample taken on 2 steel tubes on each furnace
8	Flaring test	2 samples taken on 2 steel tubes on each batch
9	Macroscopic examination	1 sample taken on 2 steel tubes on each furnace
10	Non-metallic inclusions	1 sample taken on 2 steel tubes on each furnace
11	Eddy current testing	All
12	Magnetic flux leakage detection	All
13	Ultrasonic testing	All
14	Intergranular corrosion test	1 sample from each of two steel tubes on each batch

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 TORICH INTERNATIONAL LIMITED. 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!