---

 Generally speaking, API 5L steel pipe refers to API 5L line pipe,which is out of the ground the oil, gas, water, transported by pipeline to pipe oil and gas industry companies.

according to the manufacture process and the tube bloom used different shapes, api 5l can be divided into api 5l seamless steel pipe and api welded steel pipe, among the usage quantity of welded steel pipe is more than seamless steel pipe.

Line pipe grade and chemical components
API 5L can be divided into API 5L PSL 1 and API 5L PSL 2, including API 5L PSL 1 level and the categories are: A, B, x42, x46, x52, x56, x60, x65, x70, API 5L PSL 2 level and the category is B, x42, x46, x52, x56, x60, x65, xx70, x80. the higher the level the stronger mechanical properties.

Application: used for oil and gas industry, gas, water, oil transportation.

API 5L PSL 1 Chemical composition and mechanical properties

Steel grade	C(max)	Mn(max)	P(max)	S(max)	Tensile strength	Yield strength
B	0.28	1.20	0.030	0.030	414	241
X42	0.28	1.30	0.030	0.030	414	290
X46	0.28	1.40	0.030	0.030	434	317
X52	0.28	1.40	0.030	0.030	455	359
X56	0.28	1.40	0.030	0.030	490	386
X60	0.28	1.40	0.030	0.030	517	414
X65	0.28	1.40	0.030	0.030	531	448
X70	0.28	1.40	0.030	0.030	565	483

API 5L PSL 2 Chemical composition and mechanical properties

Steel grade	C(max)	Mn(max)	P(max)	S(max)	Tensile strength	Yield strength
B	0.24	1.20	0.025	0.015	414-758	241-758
X42	0.24	1.30	0.025	0.015	414-758	290-758
X46	0.24	1.40	0.025	0.015	434-758	317-758
X52	0.24	1.40	0.025	0.015	455-758	359-758
X56	0.24	1.40	0.025	0.015	490-758	386-758
X60	0.24	1.40	0.025	0.015	517-758	414-758
X65	0.24	1.40	0.025	0.015	531-758	448-758
X70	0.24	1.40	0.025	0.015	565-758	483-758

---

Previous:LSAW steel pipe 　
Next:：Structural steel pipe　

---