PRIME STEEL PIPE: seamless carbon steel pipe

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2018/05/24

Seamless Carbon Steel VS Welded Carbon Steel

Carbon steel pipe is most commonly used in critical engineering applications. It may also be used in automotive applications or structural applications as well. Carbon steel piping is important in applications from oil and gas to control lines or electrical lines. Depending on the job at hand determine

whether you are in need of seamless carbon steel pipe or welded carbon steel pipe.

Welded carbon steel piping is formed from an originally flat piece of carbon steel. The piece of carbon steel is rolled and welded creating a welded seam going long ways down your piece of carbon steel tubing or piping. The weld is formed by using a high energy source to melt the local metal together. Thus creating a weld bead when squeezed together. You will notices where the welded seam is the weld bead. This will be raised compared to the rest of the carbon steel pipe. You will find that some seams are manipulated to become more flush with the piping, while others are sold “as-weld” meaning they are left how they are welded with no further processing to the carbon steel.

Seamless carbon steel tubing or piping, also referred to as drawn piping starts with a solid bar or block of carbon steel. The piece of carbon steel is then put through a process of drilling, extrusion, or oxygen lance to create a hollow pipe. Once the tubing is hollow it is then placed through a die and mandrel phase to create a larger interior diameter providing various sizes of seamless carbon steel tubing.

2016/08/25

The Uses of Seamless Carbon Steel Pipe

A seamless carbon steel pipe has many uses, thanks to the tough and versatile nature of carbon steel. This pipe is seamless, so it tends to have better durability and strength, making it useful for construction work. Many heat-transfer systems use a seamless carbon steel pipe network to the hot or cold liquid or gas in an area. The petroleum industry uses this pipe to carry large amounts of petroleum from the ground to the surface, and this pipe also is commonly used to transfer the petroleum to other places. This pipe is easier to form and bend than other carbon steel pipes, so it also can be used in places where custom angles and shapes are needed.

Many large structures use pipes in the deep foundation, the section that is underground. If a seamless carbon steel pipe is used, then it is driven into the ground by a large machine and may be filled with concrete after it is pile-driven to protect the pipe and make it even sturdier. This type of pipe generally is very durable and does not bend easily from stress, so it is uniquely suited for deep foundations.

Heat transfer systems are used in many structures, and one way to carry the heat around the structures is with a seamless carbon steel pipe. A fluid or gas, such as hot water or steam, normally is sent through the pipe and travels the length of the structure. The steel is corrosion resistant, and the lack of seams further protects this pipe from warping during use, so this pipe commonly is used for this purpose.

Similar to a heat-transfer system, the petroleum industry typically will use a seamless carbon steel pipe to transfer petroleum. This pipe typically is much larger than carbon steel pipes used for other purposes to allow the pipe to carry the large amount of petroleum. Depending on where the pipes are positioned, they can be used to carry the petroleum from the earth into a holding tank, or from tank to tank.

We are manufacturer of Carbon Steel Pipes and supply high quality Carbon Steel Pipes in both large and small quantities worldwide & offer you the best prices in the market.

We have a team of experienced professionals with years of experience in manufacturing.

2015/12/17

GB/T8162 Seamless Steel Pipe

GB/T8162 seamless steel pipe

Application: Suitable for general structure, seamless steel pipe for mechanical structure.

Steel Grade:10、20、35、45、16Mn、12CrMo、15CrMo、12Cr1MoV.

Mechanical properties:

Standard	Steel grade	Tensile strength (MPa)	Yield strength (MPa)	Elongation (%)
GB/T8162	10	≥ 335	≥ 205	≥ 24
	20	≥ 390	≥ 245	≥ 20
	35	≥ 510	≥ 305	≥ 17
	45	≥ 590	≥ 335	≥ 14
	16Mn	≥ 490	≥ 325	≥ 21
	12CrMo	≥ 410	≥ 265	≥ 24
	15CrMo	≥ 440	≥ 295	≥ 22
	12Cr1MoV	≥ 490	≥ 245	≥ 22

Chemical compositions:

Standard	Steel grade	Chemical composition
Standard	Steel grade	C	Si	Mn	P、S	Cu	Ni	Mo	Cr
GB/T8162	10	0.07～0.14	0.17～0.37	0.35～0.65	≤0.035	≤0.25	≤0.25	/	≤0.15
	20	0.17～0.24	0.17～0.37	0.35～0.65	≤0.035	≤0.25	≤0.25	/	≤0.25
	35	0.32～0.40	0.17～0.37	0.50～0.80	≤0.035	≤0.25	≤0.25	/	≤0.25
	45	0.42～0.50	0.17～0.37	0.50～0.80	≤0.035	≤0.25	≤0.25	/	≤0.25
	16Mn	0.12～0.20	0.20～0.55	1.20～1.60	≤0.035	≤0.25	≤0.25	/	≤0.25
	12CrMo	0.08～0.15	0.17～0.37	0.40～0.70	≤0.035	≤0.25	≤0.30	0.40～0.55	0.40～0.70
	15CrMo	0.12～0.18	0.17～0.37	0.40～0.70	≤0.035	≤0.25	≤0.30	0.40～0.55	0.80～1.10
	12Cr1MoV	0.08～0.15	0.17～0.37	0.40～0.70	≤0.035	≤0.25	≤0.30	0.25～0.35	0.90～1.20