seamless pipe, carbon pipe,stainless pipe,octg pipe manufacturers

Seamless steel pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow — liquids and gases (fluids), slurries, powders and masses of small solids.

Seamless Pipe (and tubing) is made by extruding a steel block or by drilling a solid steel bar. Next, the extrusion or the drilled steel bar is cold drawn through a dye to achieve the diameter and thickness needed. Because this process can cause mechanical hardening, sometimes the material is annealed and straightened as a final process.

Seamless Pipe & Tubing is subdivided as:

Cold Drawn Seamless, or CDS, exhibits precise tolerances and a good surface finish.

Hot Finished Seamless, or HFS, has less critical tolerances and somewhat scaly finish and is not as strong as CDS.

For Drawn over Mandrel, or DOM tubing, the first stages of manufacturing are identical to ones used to make electric resistance welded tubing, but in the finishing stages the entire flash weld is taken out and the tube is cold drawn over a mandrel. A mandrel is a round object against which material can be forged or shaped. The cold drawn process provides the tube with better dimensional tolerances, improved surface finish and the strongest weld strength achievable.

1. Production technology: Hot-rolled and cold drawn

2. Executive standards: API5L , ASME B36.10, ASTM A106/A53

3.Specification range:

OD: OD: 1/8 – 30 inch (10.3-762mm), WT: 0.049”- 2.5” (1.24- 63.5mm)

WT: SCH10-SCHXXS

4. Materials: GrB, Q345B, X42-70, ST44, ST52 etc.

5. Testing: Eddy current/ Hydrostatic/Ultrasonic/ Intergranular Corrosion etc.

6. Packing: Bundles, seaworthy packing, or as required by customers.

7. Application:

API seamless pipe are widely used for petroleum, power generation, natural gas, coal gas, water and some solid materials, also ship-building, chemical fertilizer equipment etc.

OD/mm

WT/mm

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

21.3

√

26.7

√

33.4

√

48.3

√

60.3

√

73

√

88.9

√

114.3

√

168.3

√

219.1

√

273.1

√

323.3

√

355.6

√

406.4

√

457.2

√

508

√

609.6

√

660.4

√

711.2

√

762

√

Chemical Analysis

Standard	Type of pipe	Class	Grade	C	Si	Mn	P	S	V	Nb	Ti
Standard	Type of pipe	Class	Grade	max	max	max	max	max	max	max	max
API SPEC 5L	SMLS	PLS1	L245 B L290 X42 L320 X46 L360 X52 L390 X56 L415 X60 L450 X65 L485 X70 L245N BN	0.28 0.28 0.28 0.28 0.28 0.28 0.28 0.28 0.24	0.4	1.20 1.30 1.40 1.40 1.40 1.40 1.40 1.40 1.20	0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.025	0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.015	---------	---------	0.04
		PLS2	L290N X42N	0.24	0.4	1.2	0.025	0.015	0.06	0.05	0.04
			L320N X46N	0.24	0.4	1.4	0.025	0.015	0.07	0.05	0.04
			L360N X52N	0.24	0.45	1.4	0.025	0.015	0.1	0.05	0.04
			L390N X56N	0.24	0.45	1.4	0.025	0.015	0.1	0.05	0.04
			L415N X60N	0.24	0.45	1.4	0.025	0.015	0.1	0.05	0.04
	WELD	PLS1	L245 B	0.26	-	1.2	-	0.03	0.03	-	-
			L290 X42	0.26	-	1.3	-	0.03	0.03	-	-
			L320 X46	0.26	-	1.4	-	0.03	0.03	-	-
			L360 X52	0.26	-	1.4	-	0.03	0.03	-	-
			L390 X56	0.26	-	1.4	-	0.03	0.03	-	-
			L415 X60	0.26	-	1.4	-	0.03	0.03	-	-
			L450 X65	0.26	-	1.45	-	0.03	0.03	-	-
			L485 X70	0.26	-	1.65	-	0.03	0.03	-	-
		PLS2	L245M BM	0.22	0.45	1.2	0.025	0.015	0.05	0.05	0.04
			L290M X42M	0.22	0.45	1.3	0.025	0.015	0.05	0.05	0.04
			L320M X46M	0.22	0.45	1.3	0.025	0.015	0.05	0.05	0.04
			L360M X52M	0.22	0.45	1.4	0.025	0.015	-	-	-
			L390M X56M	0.22	0.45	1.4	0.025	0.015	-	-	-
			L415M X60M	0.12	0.45	1.6	0.025	0.015	-	-	-
			L450M X65M	0.12	0.45	1.6	0.025	0.015	-	-	-
			L485M X70M	0.12	0.45	1.7	0.025	0.015	-	-	-
			L555M X80M	0.12	0.45	1.85	0.025	0.015	-	-	-

Mechanical Properities

Standard	Class	Grade		Yield strength not less than (MPa)	Tensile strength (MPa)	Elongation(%)	Y.S/T.S
API SPEC 5L ISO 3183	PLS1	L245B	min	245	415	b	-
		L290X42	min	290	415	b	-
		L320X46	min	320	435	b	-
		L360X52	min	360	460	b	-
		L390X56	min	390	490	b	-
		L415X60	min	415	520	b	-
		L450X60	min	450	535	b	-
		L485X70	min	485	570	b	-
	PLS2	L245N BN	min	245	415	b	-
		L245M BM	max	450	760	b	0.93
		L290NX42N	min	290	415	b	-
		L290MX42M	max	495	760	b	0.93
		L320NX46N	min	320	435	b	-
		L320MX46M	max	525	760	b	0.93
		L360NX52N	min	360	460	b	-
		L360MX52M	max	530	760	b	0.93
		L390NX56N	min	390	490	b	-
		L390MX56M	max	545	760	b	0.93
		L415NX60N	min	415	520	b	-
		L415MX60M	max	565	760	b	0.93
		L450MX65M	min	450	535	b	-
		L450MX65M	max	600	760	b	0.93
		L485MX70M	min	485	570	b	-
		L485MX70M	max	635	760	b	0.93
		L555MX80M	min	555	625	b	-
		L555MX80M	max	705	825	b	0.93

Toughness

Standard	Grade	Transverse minimum impact of Pipe body					Transverse minimum impact of weld (J)
		(J)
		D=508	508mm	762mm	914mm	1219mm	D<1422mm	D=1422mm
API SPEC 5L	=L415X60	27(20)	27(20)	40(30)	40(30)	40(30)	27(20)	40(30)
	>L415X60	27(20)	27(20)	40(30)	40(30)	54(40)	27(20)	40(30)
	=L415X65
	>L450X65	27(20)	27(20)	40(30)	40(30)	54(40)	27(20)	40(30)
	=L485X70
	>L485X70 =L485X80	40(30)	40(30)	40(30)	40(30)	54(40)	27(20)	40(30)

Seamless line pipe

For its different manufacturing process, there’re hot rolling steel tube and cold drawn seamless steel tube. Agico sells seamless line pipe available in different sizes, weights and grades, customer can choose from black line pipe and galvanized line pipe. from 2-3/8" to 24", steel grade A, B, X42 - X80.

Welded line pipe

Oil and gas welded line pipe for intra-field is used to transport crude oil and natural gas from the field to oil refineries and storage facilities, as well as to shipment points and distribution nodes.