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Tianjin Sanon Steel Pipe Co., Ltd. is a stockist. Our stock factory is in Cangzhou City, Hebei Province. Our main sources of goods are boiler pipes, and the representative materials are ASTM A335 P5/P11/P91/P92, ASME SA-106/SA-106M GR.B, GB/T 3087-2008 10#/20#. The representative materials of pipeline pipes are API 5L, API 5CT, the representative materials of petroleum cracking pipes GB/T 9948 are 15MoG/12CrMoVG. GB/T 6479-2013 represents the material 10#/20#, heat exchanger tubes SA179/SA210/SA192, etc., mechanical tubes GB/T 8162 represent the material 10#/20#/Q345/42CrMo, EN10210 represents the material S355JOH/S355J2H, gas cylinder tubes GB1 8248, represent the material 34CrMo4/30CrMo.

Classification of Seamless Steel Pipes

1. Classification by Production Method

 

Parent Category	Sub-category	Description
Seamless Steel Pipe	Hot Rolled Pipe	Rolled after heating and piercing, with uniform wall thickness
Seamless Steel Pipe	Cold Drawn / Cold Rolled Pipe	Higher dimensional accuracy and better surface finish
Welded Steel Pipe	Longitudinal Welded Pipe (ERW/LSAW)	Formed by rolling steel plate with straight seam welding
Welded Steel Pipe	Spiral Welded Pipe (SSAW)	Formed by spiral rolling of steel strip and welded spirally

2. Classification by Application

 

Parent Category	Sub-category	Typical Standard	SANONPIPE
Line Pipe	API 5L Gr.B / X42~X80	API 5L	Core Product
Boiler Pipe	High-pressure Boiler Pipe (GB5310 / ASME SA192/210/213/335)	GB5310, ASME	Core Product
Boiler Pipe	Low & Medium-pressure Boiler Pipe (GB3087)	GB3087	Available Supply
Petroleum Cracking Pipe	GB9948	GB9948	Supplied on Demand
Chemical Fertilizer Equipment Pipe	GB6479	GB6479	Supplied on Demand
Mechanical Structural Pipe	GB/T8162, ASTM A519	GB/T8162	Supplementary Product
Fluid Pipe	GB/T8163, ASTM A106	GB/T8163	Supplementary Product

3. Classification by Material

 

Parent Category	Sub-category	Typical Grade	SANONPIPE
Carbon Steel Pipe	Mild Carbon Steel	10#, 20#, Q195, Q235	Commonly Used
Carbon Steel Pipe	High-quality Carbon Steel	20#, 45#, A106B	Commonly Used
Alloy Steel Pipe	Low Alloy Steel	15CrMo, 12Cr1MoV	Core Product
Alloy Steel Pipe	Chrome-Moly Alloy Steel	P11, P22, P91, P92	Core Product
Stainless Steel Pipe	Austenitic Stainless Steel	304, 316, 321	Supplied on Demand
Stainless Steel Pipe	Ferritic / Martensitic Stainless Steel	409, 410	Supplied on Demand
Low-temperature Steel Pipe	ASTM Standard	A333 Gr.6	Supplied on Demand
Low-temperature Steel Pipe	GB Standard	16MnDG, 09MnNiD	Supplied on Demand

4. Classification by Section Shape

 

Parent Category	Sub-category	Description	SANONPIPE
Round Pipe	Standard Round Pipe	Outer diameter: 6-2000mm	Over 80% of Products
Square & Rectangular Pipe	Square Pipe / Rectangular Pipe	Side length: 20-500mm	Over 20%, mainly for European Market
Special-shaped Pipe	Elliptical, Hexagonal, Semicircular, etc.	Special cross-section	Rarely supplied

5. Classification by Connection End Type

 

Parent Category	Sub-category	Description	SANONPIPE
Plain End Pipe	Plain End	Without end processing	Commonly Used
Threaded Pipe	Taper Thread (NPT/BSPT)	Sealing thread	Custom Processing Available
Threaded Pipe	Straight Thread	Non-sealing thread	Custom Processing Available
Grooved Pipe	Groove Connection	For fire protection and water supply	Custom Processing Available
Beveled End Pipe	Welding Bevel	V-type, U-type bevel	Commonly Used

Business Scope Summary of SANONPIPE

 

Classification Dimension	Business Coverage
Production Method	Mainly seamless steel pipe; welded steel pipe supplied on demand
Application	Core: API 5L line pipe + ASME/GB boiler pipe; Supplementary: structural pipe & fluid pipe
Material	Mainly carbon steel and alloy steel
Section Shape	Over 95% round pipe; square & rectangular pipe available on request
Connection Mode	Beveled end as standard; thread and groove processing available
Surface Finish	Standard black varnish coating; galvanizing and anti-corrosion treatment optional