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TYPES OF STEEL PIPES

Last updated: 19 Sept 2026
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Steel pipes can be classified into the following types :

 

Carbon Steel Pipe

Steel pipes or black steel pipes or carbon pipes are a type of steel pipe for system applications that are commonly used in general water systems, fire fighting systems, chilled water systems, oil systems, steam.

***How ​​to identify: Externally, it appears dark brown or black.

 

 

We supply steel pipes according to the following standards:

- ASTM A53 GR.A SCH.40/80

- ASTM A53 GR.B SCH.40/80         
- ASTM A795 GR.A SCH.10
- ASTM A106 GR.B SCH.20/40/80/160
- API 5L GR.B  SCH.40/80

 

Galvanized Steel Pipe

Galvanized steel pipe or plumbing steel pipe is a type of steel pipe for system applications that are commonly used in water supply systems, fire fighting systems, chilled

***How ​​to identify: The exterior features a bright silver color with blue or red accents.


 

We supply galvanized steel pipes in accordance with the following standards:

- BS 1387 Class Medium

- BS 1387 Class Heavy
- มอก. 276 ชั้นคุณภาพ S195T
- ASTM A53 GR.A SCH.40
- ASTM A53 GR.B SCH.40

 

Red Coating Carbon Steel Pipe

Red coated steel pipe is a steel pipe for fire extinguishing system applications. Because it is a steel pipe with a red coating that has come from the factory. Most of them are seamless

***How ​​to identify: It is characterized by a red exterior.



We supply red-coated steel pipes in accordance with the following standards:

- ASTM A53 GR.A SCH.40

- ASTM A53 GR.B SCH.40

 

Stainless Steel Pipe

Stainless steel pipe or stainless steel pipe is a type of steel pipe for system applications that are commonly used in general water systems, chemical conveying systems, and gas pipelines. with both seamed and seamless types.

In addition to stainless steel pipes, We also offer Stainless Steel Tubes, which can be used in the same way, but with a smaller size than stainless steel pipes and a specified


***How ​​to identify: The exterior has a cloudy silver appearance (not glossy).


 

We supply stainless steel pipes according to the following standards:

-ASTM A312 TP304/304L SCH.10S/40S (Pipes)

-ASTM A312 TP316/316L SCH.10S/40S (Pipes)
-ASTM 213/A269 TP316/316L (Tubes)

 

Alloy Steel Pipe

                Alloy pipes are a type of steel pipe for system applications that are used with fluids at very high or very low temperatures. It will be seamless.

***How ​​to identify: Externally, it is dark brown.


 

We supply alloy pipes according to the following standards :

- ASTM A333 GR.6 SCH.40/80 (Low Temp.)

- ASTM A335 P11 SCH.40/80/100 (High Temp.)
- ASTM A335 P22 SCH.80/120/160 (High Temp.)

 


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