Ministry Standard Spiral Steel Pipe

You can rest assured to buy Pengfa Ministry Standard Spiral Steel Pipe from our factory and we will offer you the best after-sale service and timely delivery. It is an important material widely used in construction, highways, Bridges, hydraulic engineering, petroleum, chemical industry, coal machinery and other fields. So, what are the advantages of spiral steel pipe? Let's find out.

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Product Description

Spiral steel pipe has high strength. This steel pipe is made of high-strength steel, so its strength is very high, can withstand greater pressure and weight, has very good tensile and bending properties. Therefore, when used in construction and other fields, the strength and stability of the structure can be greatly improved.

Spiral steel pipe has good corrosion resistance. Steel pipe surface after fine treatment, has good corrosion resistance, can be used in harsh environment for a long time without rust and corrosion problems, so it is very suitable for hydraulic engineering and petrochemical industry and other fields.

Spiral steel pipe installation and maintenance is very convenient. Steel pipe joint adopts the joint, can be quickly connected, installation is very convenient. Also, due to its smooth surface, maintenance is very easy, requiring only regular cleaning and application of preservatives.

Spiral steel pipe also has good economy. Compared with other materials, the price of spiral steel pipe is more reasonable, and the service life is longer, so in long-term use can save a lot of maintenance costs, but also can improve production efficiency.

To sum up, spiral steel pipe is a very kind of building material, with high strength, good corrosion resistance, convenient installation and maintenance and good economy. It has been widely used in various engineering and fields. If you also need to use this kind of building material, then spiral steel pipe is your choice!

As the professional manufacture, we would like to provide you Pengfa Ministry Standard Spiral Steel Pipe. The pipe is available in a range of sizes and thicknesses, and is manufactured to meet the requirements of various national and international standards, including the American Petroleum Institute (API) 5L standard, which specifies the requirements for line pipe used in the oil and gas industry. Ministry Standard Spiral Steel Pipe is highly durable and resistant to corrosion, making it suitable for use in harsh environments. It is also easy to install and maintain, and has a long service life, making it a cost-effective choice for many applications.

Commonly used standards for Ministry Standard Spiral Steel Pipe are generally divided into: SY/T5037-2018 (ministry standard, also known as spiral seam submerged arc welded steel pipes for ordinary fluid conveying pipelines), GB/T3091-2015, GB/T9711-2017 PSL1 PSL2 (national standard, also It is called oil and gas industry transmission steel pipe), API-5L (American Petroleum Institute, also called pipeline steel pipe; it is divided into two levels: PSL1 and PSL2), SY/T5040-2018 (spiral seam submerged arc welded steel pipe for piles).

Product Parameter (Specification)

Diameter	mm Diameter	mm Wall thickness	Kg/m Single weight	(mpa) Minimum test pressure
Diameter	mm Diameter	mm Wall thickness	Kg/m Single weight	A L210	B L245	X42 L29	X46 L320	X52 L360
20"	508	5.6	69.38	2.8	3.2	5.8	6.3	7.1
		6.4	79.16	3.2	3.7	6.6	7.3	8.2
		7.1	87.70	3.5	4.1	7.3	8.1	9.1
		7.9	97.43	3.9	4.6	8.1	9.0	10.1
		8.7	107.12	4.3	5.0	8.9	9.9	11.1
		9.5	116.78	4.7	5.5	9.8	10.8	12.1
		10.3	126.41	5.1	6.0	10.6	11.7	13.1
		11.1	136.01	5.5	6.4	11.4	12.6	14.2
		11.9	145.58	5.9	6.9	12.2	13.5	15.2
		12.7	155.12	6.3	7.4	13.1	14.4	16.2
		14.3	174.10	7.1	8.3	14.7	16.2	18.2
		15.9	192.95	7.9	9.2	16.3	18.0	20.3
24"	609.6	6.4	95.26	2.6	3.1	5.5	6.0	6.8
		7.1	105.56	2.9	3.4	6.1	6.7	7.5
		7.9	117.30	3.3	3.8	6.8	7.5	8.4
		8.7	129.00	3.6	4.2	7.4	8.2	9.2
		9.5	140.68	3.9	4.6	8.1	9.0	10.1
		10.3	152.32	4.2	4.9	8.8	9.8	11.0
		11.1	163.93	4.6	5.3	9.5	10.5	11.8
		11.9	175.51	4.9	5.7	10.2	11.2	12.6
		12.9	187.06	5.2	6.1	10.9	12.0	13.5
		14.3	210.07	5.9	6.9	12.2	13.5	15.2
		15.9	232.94	6.6	7.7	13.6	15.0	16.9
30"	762	6.4	111.20	2.3	2.6	4.7	5.2	5.8
		7.1	123.24	2.5	2.9	5.2	5.8	6.5
		7.9	136.97	2.8	3.3	5.8	6.4	7.2
		8.7	150.67	3.1	3.6	6.4	7.0	7.9
		9.5	164.34	3.4	3.9	7.0	7.7	8.7
		10.3	177.98	3.7	4.3	7.6	8.3	9.4
		11.1	191.58	3.9	4.6	8.1	9.0	10.1
		11.9	205.15	4.2	4.9	8.7	9.6	10.8
		12.7	218.69	4.5	5.3	9.3	10.3	11.6
		14.3	245.68	5.1	5.9	10.5	11.6	13.0
		15.9	272.54	5.6	6.6	11.7	12.9	14.5
32"	812.8	6.4	127.30	2.0	2.3	4.1	4.5	5.1
		7.1	141.10	2.2	2.6	4.6	5.0	5.7
		7.9	156.84	2.4	2.9	5.1	5.6	6.3
		8.7	172.56	2.7	3.1	5.6	6.2	6.9
		9.5	188.24	2.9	3.4	6.1	6.7	7.6
		10.3	203.88	3.2	3.7	6.6	7.3	8.2
		11.1	219.50	3.4	4.0	7.1	7.9	8.8
		11.9	235.09	3.7	4.3	7.6	8.4	9.5
		12.7	250.64	3.9	4.6	8.2	9.0	10.1
		14.3	281.65	4.4	5.2	9.2	10.1	11.4
		15.9	312.54	4.9	5.7	10.2	11.3	12.7
36"	914.4	6.4	143.24	1.8	2.1	3.7	4.0	4.5
		7.1	158.79	2.0	2.3	4.1	4.5	5.0
		7.9	176.52	2.2	2.5	4.5	5.0	5.6
		8.7	194.22	2.4	2.8	5.0	5.5	6.2
		9.5	211.90	2.6	3.1	5.4	6.0	6.7
		10.3	219.51	2.8	3.3	5.9	6.5	7.3
		11.1	247.15	3.1	3.6	6.3	7.0	7.9
		11.9	264.72	3.3	3.8	6.8	7.5	8.4
		12.7	282.27	3.5	4.1	7.3	8.0	9.0
		14.3	317.27	3.9	4.6	8.2	9.0	10.1
		15.9	352.14	4.4	5.1	9.1	10.0	11.3
		17.5	386.88	4.8	5.6	10.0	11.0	12.4

Diameter	mm Diameter	mm Wall thickness	Kg/m Single weight	(mpa) Minimum test pressure
Diameter	mm Diameter	mm Wall thickness	Kg/m Single weight	A L210	B L245	X42 L290	X46 L320	X52 L360
8.63"	219.1	5.6	29.48	6.4	7.5	11.1	12.3	13.8
		6.4	33.57	7.4	8.6	12.7	14	15.8
		7.0	36.61	8.1	9.4	13.9	15.3	17.3
		7.9	41.14	9.1	10.6	15.7	17.3	19.5
		8.2	42.65	9.4	11.0	16.3	18.0	20.2
		8.7	45.14	10.0	11.7	17.3	19.1	20.7
10.75"	273.1	5.6	36.94	5.2	6.0	10.1	11.2	12.5
		6.4	42.09	5.9	6.9	11.6	12.7	14.3
		7.1	46.57	6.6	7.6	12.8	14.1	15.9
		7.8	51.03	7.2	8.4	14.1	15.5	17.5
		8.7	56.72	8.0	9.4	15.7	17.3	19.5
		9.3	60.05	8.6	10.0	16.8	18.5	20.7
12.75"	323.9	5.6	43.96	4.4	5.1	8.5	9.4	10.6
		6.4	50.11	5.0	5.8	9.7	10.7	12.71
		7.1	55.47	5.5	6.4	10.8	11.9	13.4
		7.9	61.56	6.1	7.2	12.0	13.9	14.9
		8.4	65.35	6.5	7.6	12.8	14.1	15.9
		8.7	67.62	6.8	7.9	13.2	14.6	16.4
		9.5	73.65	7.4	8.6	14.5	16.0	17.9
		10.3	79.65	8.0	9.3	15.7	17.3	19.5
		11.1	85.62	8.6	10.1	16.9	18.6	20.7
		12.7	97.46	9.9	11.5	19.3	20.7	20.7
		14.3	109.18	11.1	13.0	20.7	20.7	20.7
14"	355.6	5.6	48.33	4.0	4.6	7.8	8.6	9.6
		6.4	55.11	4.5	5.3	8.9	9.8	11.0
		7.1	61.02	5.0	5.9	9.8	10.9	12.2
		7.9	61.74	5.6	6.5	11.0	12.1	13.6
		8.7	74.42	6.2	7.2	12.1	13.3	15.0
		9.5	81.08	6.7	7.9	13.2	14.5	16.3
		10.3	87.71	7.3	8.5	14.3	15.8	17.7
		11.1	94.30	7.9	9.2	15.4	17.0	19.11
		11.9	100.86	8.4	9.8	16.5	18.2	20.5
		12.7	107.39	9.0	10.5	17.6	19.4	20.7
		14.3	120.36	10.1	11.8	19.8	20.7	20.7
16"	406.4	5.6	55.35	3.5	4.1	6.8	7.5	8.4
		6.4	63.13	4.0	4.6	7.8	8.6	9.6
		7.1	69.91	4.4	5.1	8.6	9.5	10.7
		7.9	77.63	4.9	5.7	9.6	10.6	11.9
		8.7	85.32	5.4	6.3	10.6	11.6	13.1
		9.5	92.98	5.9	6.9	11.5	12.7	14.3
		10.3	100.61	6.4	7.5	12.5	13.8	15.5
		11.1	108.20	6.9	8.0	13.5	14.9	16.7
		11.9	115.77	7.4	8.6	14.4	15.9	17.0
		12.7	123.30	7.9	9.2	15.4	17.0	19.1
		14.3	138.27	8.9	10.3	17.3	19.1	20.7
		15.9	153.11	9.9	11.5	19.3	20.7	20.7
18"	457.2	5.6	62.34	3.1	3.6	6.0	6.7	7.5
		6.4	71.12	3.5	4.1	6.9	7.6	8.6
		7.1	78.77	3.9	4.6	7.7	8.5	9.5
		7.9	87.49	4.4	5.1	8.5	9.4	10.6
		8.7	96.18	4.8	5.6	9.4	10.4	11.7
		9.5	104.84	5.2	6.1	10.2	11.6	12.7
		10.3	113.46	5.7	6.6	11.1	12.6	13.8
		11.1	122.05	6.1	7.1	12.0	14.2	14.9
		11.9	13062	6.6	7.7	12.8	14.2	15.9
		12.7	139.15	7.0	8.2	13.7	15.1	17.0
		14.3	156.11	7.9	9.2	15.4	17.0	19.2
		15.9	172.95	8.8	10.2	17.2	18.9	20.7

Diameter	mm Diameter	mm Wall thickness	Kg/m Single weight	(mpa) Minimum test pressure
Diameter	mm Diameter	mm Wall thickness	Kg/m Single weight	A L210	B L245	X42 L290	X46 L320	X52 L360
42"	1066.8	7.9	196.39	2.0	2.3	4.1	4.5	5.0
		8.7	216.11	2.2	2.5	4.5	4.9	5.5
		9.5	235.79	2.4	2.7	4.9	5.4	6.1
		10.3	255.45	2.6	3.0	5.3	5.8	6.6
		11.1	275.07	2.8	3.2	5.7	6.3	7.1
		11.9	294.66	3.0	3.4	6.1	6.7	7.6
		12.7	314.22	3.2	3.7	6.5	7.2	8.1
		14.3	353.24	3.5	4.1	7.3	8.1	9.1
		15.9	392.13	3.9	4.6	8.2	9.0	10.1
		17.5	430.90	4.3	5.1	9.0	9.9	11.2
48"	1219.2	8.7	259.66	1.8	2.1	3.7	4.1	4.6
		9.5	283.35	2.0	2.3	4.1	4.5	5.1
		10.3	307.01	2.1	2.5	4.4	4.9	5.5
		11.1	330.63	2.3	2.7	4.8	5.2	5.9
		11.9	354.23	2.5	2.9	5.1	5.6	6.3
		12.7	377.79	2.6	3.1	5.4	6.0	6.8
		14.3	424.82	3.0	3.4	6.1	6.8	7.6
		15.9	471.73	3.3	3.8	6.8	7.5	8.5
		17.5	518.51	3.6	4.2	7.5	8.3	9.3
54"	1371.6	9.5	330.91	1.7	2.0	3.5	3.8	4.3
		10.3	358.57	1.8	2.1	3.8	4.2	4.7
		11.1	386.20	2.0	2.3	4.1	4.5	5.1
		11.9	413.80	2.1	2.5	4.4	4.8	5.4
		12.7	441.37	2.3	2.6	4.7	5.1	5.8
		14.3	496.41	2.5	3.0	5.2	5.8	6.5
		15.9	551.32	2.8	3.3	5.8	6.4	7.2
		17.5	606.11	3.1	3.6	6.4	7.1	8.0
60"	1524	9.5	378.70	1.5	1.7	3.0	3.4	3.8
		10.3	410.38	1.6	1.9	3.3	3.6	4.1
		11.1	442.04	1.7	2.0	3.6	3.9	4.4
		11.9	473.66	1.8	2.2	3.8	4.2	4.7
		12.7	505.26	2.0	2.3	4.1	4.5	5.1
		14.3	568.35	2.2	2.6	4.6	5.1	5.7
		15.9	631.31	2.5	2.9	5.1	5.6	6.6
		17.5	694.15	2.7	3.2	5.6	6.2	7.0
72"	1828.8	12.7	568.83	1.7	2.0	3.6	4.0	4.5
		14.8	639.93	2.0	2.3	4.1	4.5	5.1
		15.9	710.91	2.2	2.6	4.5	5.0	5.6
		17.5	781.75	2.4	2.8	5.0	5.5	6.2
		19.1	852.47	2.6	3.1	5.5	6.0	6.8
80"	2032	14.3	711.52	1.8	2.0	3.7	4.1	4.6
		15.9	790.50	2.0	2.3	4.1	4.5	5.1
		17.5	869.36	2.2	2.5	4.5	5.0	5.6
		19.1	948.09	2.4	2.8	4.9	5.4	6.1
88"	2235.2	14.3	783.10	1.7	2.0	3.5	3.9	4.4
		15.9	870.10	1.9	2.2	3.9	4.3	4.9
		17.5	956.96	2.1	2.4	4.3	4.8	5.4
		19.1	1043.70	2.3	2.6	4.7	5.2	5.8
95"	2413	15.9	939.89	1.8	2.0	3.6	4.0	4.5
		17.5	1033.78	2.0	2.2	4.0	4.4	5.0
		19.1	1127.54	2.2	2.4	4.4	4.8	5.4

Ministry Standard Spiral Steel Pipe production process is described as follows:

Spiral steel pipe production process: It is a spiral seam steel pipe made of strip steel and coiled plate as raw materials, extruded at regular temperature, and welded by automatic double-wire double-sided submerged arc welding process.

1.Raw materials, namely strip steel coils, coils, welding wires, and fluxes, must undergo strict physical and chemical tests before being put into use.

2.The head-to-tail butt joint of strip steel adopts single-wire or double-wire submerged arc welding, and automatic submerged arc welding is used for repair welding after being rolled into steel pipes.

3.Before forming, the strip steel is leveled, trimmed, planed, surface cleaned, transported and pre-bent.

4.The Ministry Standard Spiral Steel Pipe uses an electric contact pressure gauge to control the pressure of the oil cylinder on both sides of the conveyor to ensure the smooth conveying of the strip.

5.Adopt external control or internal control roll forming.

6.The weld gap control device is used to ensure that the weld gap meets the welding requirements, and the pipe diameter, misalignment and weld gap are strictly controlled.

7.Both internal and external welding adopt American Lincoln electric welding machine for single-wire or double-wire submerged arc welding, so as to obtain stable welding specifications.

8.All welded seams are inspected by online continuous ultrasonic automatic flaw detector, which ensures 100% coverage of non-destructive testing of spiral welds. If there is a defect, it will automatically alarm and spray the mark, and the production workers can adjust the process parameters at any time according to this to eliminate the defect in time.

9.Use air plasma cutting machine to cut the steel pipe into single pieces.

10.After cutting into single steel pipes, the first three steel pipes of each batch must undergo a strict first-inspection system to check the mechanical properties, chemical composition, fusion status of the welds, surface quality of the steel pipes, and non-destructive testing to ensure that the pipe-making process is qualified. After that, it can be officially put into production.

11.The part with continuous ultrasonic flaw detection mark on the weld seam shall undergo manual ultrasonic and X-ray re-examination. If there is a defect, after repair, it shall undergo non-destructive inspection again until it is confirmed that the defect has been eliminated.

12.The tubes where the butt welds of strip steel and coiled plates intersect with the spiral welds are all inspected by X-ray TV or film.

13.Each steel pipe has passed the hydrostatic pressure test, and the pressure is radially sealed. The test pressure and time are strictly controlled by the steel pipe water pressure microcomputer detection device, and the test parameters are automatically printed and recorded.

14. The pipe end is mechanically processed to accurately control the verticality of the end face, the bevel angle and the blunt edge.

The main inspection/control items of Ministry Standard Spiral Steel Pipe include:

Dimensions: outer diameter of steel pipe, wall thickness, ellipticity, curvature, verticality of pipe end.
Length appearance quality: weld reinforcement, misalignment, steel pipe surface, delamination, inclusions, weld defect judgment.
Chemical composition: testing procedures such as welded joint tensile test, hydrostatic pressure test, acid etching test, non-destructive test, etc.

Product Feature And Application

Ministry Standard Spiral Steel Pipe have been widely used in long-distance oil and gas pipeline projects such as the West-East Gas Transmission Project in my country, and are the main pipe materials used in long-distance oil and gas pipeline projects in my country. It is widely used in natural gas, petroleum, chemical industry, electric power, heat, water supply and drainage, steam heating, pressure steel pipes for hydropower stations, thermal power generation, construction, shipbuilding, machinery manufacturing, boiler manufacturing, water sources and other long-distance transmission pipelines and piling, dredging, Engineering fields such as bridges and steel structures.