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Seamless Steel Pipe

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API 5L GR.B, X42,X52,X60,X65 PSL1 & PSL2
Size range:  2" - 24"
Schedules: STD,SCH100,SCH120,SCH160,XXH
utilized for the water and petroleum industry to transport liquids or as platforms on off-shore rigs.

ASTM A53 GR.B, ASTM A106 GR.B
Size range:  1/8" - 26"
Schedules: SCH20, SCH30, SCH40, STD, SCH100, SCH120,SCH160,XXH

utilized for services ranging from structural supports to steam drum headers with temperature ranges up to 800°F





Standard of carbon seamless steel pipe
ASTM A53 Gr.B Black and hot-dipped zinc-coated steel pipes welded and seamless
ASTM A106 Gr.B Seamless carbon steel for high temperature service
ASTM SA179  Seamless cold-drawn low-carbon steel heat exchanger and condenser tubes
ASTM SA192  Seamless carbon steel boiler tubes for high pressure
ASTM SA210  Seamless Medium-carbon boiler and superheater tubes
ASTM A213 Seamless alloy-steel boiler, superheater, and heat-exchanger tubes
ASTM A333 GR.6 seamless and welded carbon and alloy steel pipe intended for use at low temperatures.
ASTM A335 P9,P11,T22,T91
Seamless ferritic alloy-steel pipe for high-temperature service
ASTM A336 
Alloy steel forgings for pressure and high-temperature parts
ASTM SA519 4140/4130 Seamless carbon for mechanical tubing
API Spec 5CT J55/K55/N80/L80/P110/K55 Seamless steel pipe for casing
API Spec 5L PSL1/PSL2 Gr.b, X42/46/52/56/65/70 Seamless steel pipe for line pipe
DIN 17175 Seamless steel tube for elevated temperture
DN2391  Cold drawn seamless prevision pipe
DIN 1629 
Seamless circular unalloyed steel tubes subject to special requirements






Manufacturing Process

Billets and coils are delivered to the pipe mill ready to be made into carbon steel pipe. Depending on the capabilities of the pipe mill and the end use of the final product, the casts will be formed into pipe by means of four distinct different manufacturing.Seamless carbon steel pipe has, as its name implies, no longitudinal weld seam. It is, in essence, one solid homogeneous piece of steel. A solid billet is simply heated and then stretched over a series of mandrels until the pipe has achieved its desired diameter and wall thickness.


Special Performance Requirements

Performance Requirements


Strength                  
Strength Control by
Q&T Heat Treatment
Toughness              
Clean steel
• Fully killed and fi ne grained
• Low P, S, N, O, H
• Inclusion shape control
• Low segregation
Weldability            
Pcm Control Weldability