Hot Expanded Seamless Pipe

What is hot expanded seamless pipe

The hot expanded seamless steel pipe is relatively low density but the contraction of the strong seamless steel pipe can be referred to as thermal expansion. The roughing finishing process for expanding the diameter of a pipe by a cross-rolling method or a drawing method. Steel pipe thickening in a short period can produce non-standard and special types of seamless tubes with low-cost and high production efficiency, the current international developments in the field of tube rolling.

Size of hot expanded seamless pipe

Nominal size		Outside Diameter	Nominal Wall Thickness (mm)
Nominal size		Outside Diameter	Nominal Wall Thickness (mm)
DN	NPS	OD(MM)	SCH	SCH	SCH	STD	SCH	SCH	XS	SCH	SCH	SCH	SCH	SCH	XXS
DN	NPS	OD(MM)	10	20	30	STD	40	60	XS	80	100	120	140	160	XXS
200 250 300	8 10 12	219.1 273.1 323.9	3.76 4.19 4.57	6.35 6.35 6.35	7.04 7.80 8.38	8.18 9.27 9.53	8.18 9.27 10.31	10.31 12.70 14.27	12.70 12.70 12.70	12.70 15.09 17.48	15.09 18.26 21.44	18.26 21.44 25.40	20.62 25.40 28.58	23.01 28.58 33.32	22.23 25.40 25.40
350 400 450	14 16 18	355.6 406.4 457.2	6.35 6.35 6.35	7.92 7.92 7.92	9.53 9.53 11.13	9.53 9.53 9.53	11.13 12.70 14.27	15.09 16.66 19.05	12.70 12.70 12.70	19.05 21.44 23.83	23.83 26.19 29.36	27.79 30.96 34.93	31.75 36.53 39.67	35.71 40.49 45.24	— —
500 550 600	20 22 24	508 559 610	6.35 6.35 6.35	9.53 9.53 9.53	12.70 12.70 14.27	9.53 9.53 9.53	15.09 — 17.48	20.62 22.23 24.61	12.7	26.19 28.58 30.96	32.54 34.93 38.89	38.10 41.28 46.02	44.45 47.63 52.37	50.01 53.98 59.54	— —
									12.7
									12.7
500 550 600	20 22 24	508 559 610	6.35 6.35 6.35	9.53 9.53 9.53	12.70 12.70 14.27	9.53 9.53 9.53	15.09 — 17.48	20.62 22.23 24.61	12.70 12.70 12.70	26.19 28.58 30.96	32.54 34.93 38.89	38.10 41.28 46.02	44.45 47.63 52.37	50.01 53.98 59.54	— —
660 700 750	26 28 30	660 711 762	7.92 7.92 7.92	12.70 12.70 12.70	— 15.88 15.88	9.53 9.53 9.53	— —	— —	12.70 12.70 12.70	— —	— —	— —	— —	— —	— —
800 850 900	32 34 36	813 864 914	7.92 7.92 7.92	12.70 12.70 12.70	15.88 15.88 15.88	9.53 9.53 9.53	17.48 17.48 19.05	— —	12.70 12.70 12.70	— —	— —	— —	— —	— —	— —

Manufacturing process of hot expanded seamless pipe

Circular hacksaw steel------furnace burning------round steel perforation------tube billet hot rolling------steel pipe straightening------steel pipe saw Head------Packing of finished steel pipe

Standard of hot expanded seamless pipe

Outside Diameter (mm) /	SCH	SCH	SCH	STD	SCH	SCH	XS	SCH	SCH	SCH	SCH	SCH
Wall Thickness (mm)	10	20	30	STD	40	60	XS	80	100	120	140	160
457	6.35	7.92	11.13	9.53	14.27	19.05	12.7	23.88	29.36	34.93	39.67	45.24
508	6.35	9.53	12.7	9.53	15.09	20.62	12.7	26.19	32.54	38.1	44.45	50.01
559	6.35	9.53	12.7	9.53		22.23	12.7	28.58	34.93	41.28	47.63	53.98
610	6.35	9.53	14.27	9.53	17.48	24.61	12.7	30.96	38.39	46.02	52.37	59.54
660	7.92	12.7		9.53			12.7
711	7.92	12.7	15.88	9.53			12.7
762	7.92	12.7	15.88	9.53			12.7
Remark: The above standard and specifications are just for reference, we can also produce the customized products according to customer’s requests.

Application of hot expanded seamless pipe

Petrochemical Industries
Paper industries
Sugar Factory
Cement Factory
Power Plant
Petroleum Industries
Chemical Industries
Shipbuilding Plant
Construction Industries
Steel Plant
Oil Mills Industries
Fertilizers Industries
Oil&Gas Industries
Refineries Industries
Defense Industries

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