The utility of the various high frequency welded pipe ERW

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 4000 m.t./month

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Standard of ERW Welded Pipes: API SPEC 5L, API SPEC 5CT, ASTM A53, GB/T9711.1

Steel Grade of ERW Welded Pipes:API SPEC 5L: B, X42, X46, X52, X56, X60, X65

API SPEC 5CT: J55, K55, N80, L80-1

ASTM A53: A, B, C

GB/T9711.1:L242、L290、L320、L360、L390、L415、L450

Sizes of ERW Welded Pipes:

Standard: GB/9711.1

Mechanical Properties

Remark: Besides below sizes, we also can arrange production based on requirement of customers

OD		WT			WEIGHT
INCH	MM	SCH	MM	INCH	KG/M	LB/INCH
1 1/2”	48.3	STD-40	3.68	0.145	4.09	2.75
1 1/2”	48.3	XS-80	5.08	0.2	5.47	3.68
2”	60.3	STD-40	3.91	0.154	5.49	3.69
2”	60.3	XS-80	5.54	0.218	7.56	5.08
2 1/2”	73	STD-40	5.16	0.203	8.72	5.86
2 1/2”	73	XS-80	7.01	0.276	11.52	7.74
3”	88.9	STD-40	5.49	0.216	11.41	7.67
3”	88.9	XS-80	7.62	0.3	15.43	10.37
3 1/2”	101.6	STD-40	5.74	0.226	13.71	9.21
3 1/2”	101.6	XS-80	8.08	0.318	18.83	12.65
4”	114.3	STD-40	6.02	0.237	16.24	10.91
4”	114.3	XS-80	8.56	0.337	22.55	15.15
5”	141.3	STD-40	6.55	0.258	21.99	14.78
5”	141.3	XS-80	9.53	0.375	31.28	21.02
6”	168.3	STD-40	7.11	0.28	28.55	19.19
6”	168.3	XS-80	10.97	0.432	42.99	28.89
8”	219.1	STD-40	8.18	0.322	42.98	28.88
8”	219.1	XS-80	12.7	0.5	65.3	43.88
10”	273	STD-40	9.27	0.365	60.9	40.92
10”	273	80	15.09	0.594	96.95	65.15
12”	323.8	STD	9.53	0.375	74.61	50.13
12”	323.8	40	10.31	0.406	80.51	54.1
12”	323.8	XS	12.7	0.5	98.42	66.14
12”	323.8	80	17.48	0.688	133.38	89.63
14”	355.6	40	11.13	0.438	95.51	64.18
14”	355.6	XS	12.7	0.5	108.48	72.9
14”	355.6	80	19.05	0.75	159.71	107.32
16”	406.4	XS-40	12.7	0.5	124.55	83.69
18”	457	STD	9.53	0.375	106.23	71.38
18”	457	40	14.27	0.562	157.38	105.75
18”	457	80	23.83	0.938	257.13	172.78
20”	508	40	15.09	0.594	185.28	124.5
20”	508	80	26.19	1.031	314.33	211.22

Q: How are steel pipes protected against galvanic corrosion?: Steel pipes are protected against galvanic corrosion through various methods including the application of protective coatings such as zinc or epoxy, cathodic protection systems, and the use of corrosion inhibitors.

Q: Are steel pipes suitable for nuclear power plants?: Yes, steel pipes are suitable for nuclear power plants. Steel is a commonly used material in the construction of nuclear power plants due to its excellent mechanical properties, high strength, and durability. Steel pipes are used in various applications within these plants, including the transportation of cooling water, hot gases, and steam. The steel used in nuclear power plants is carefully selected and tested to meet stringent safety regulations and quality standards. It is crucial for these pipes to have excellent resistance to corrosion and high-temperature environments, as they are exposed to harsh conditions such as high pressure, high temperatures, and radioactive materials. Furthermore, steel pipes have a long service life and require minimal maintenance, making them a cost-effective choice for nuclear power plants. They can withstand extreme conditions, ensuring the safe and reliable operation of the plant. Additionally, steel pipes can be easily fabricated, installed, and repaired, which is essential for the efficient functioning of a nuclear power plant. Overall, steel pipes are highly suitable for nuclear power plants due to their strength, durability, resistance to corrosion, and ability to withstand extreme conditions.

Q: How are steel pipes used in wastewater treatment plants?: Steel pipes are used in wastewater treatment plants for various purposes such as transporting wastewater, carrying chemicals and additives, and supporting the infrastructure.

Q: 25 of the steel pipe with 6 in charge of what is the difference?: 25 of the steel pipe with 6 in charge of the difference:25 of the steel pipe refers to the DN25 tube, the outer diameter of 25mm; 6, in charge of refers to DN20 steel pipe, the outer diameter is 20mm.

Q: What is the importance of corrosion resistance in steel pipes?: Corrosion resistance in steel pipes is crucial as it helps prevent the deterioration of the pipes due to chemical reactions with substances in their surroundings. This resistance ensures the longevity and durability of the pipes, minimizing the risk of leaks, clogs, and structural failures. Additionally, it helps maintain the quality and safety of the transported fluids or gases, preventing contamination or degradation. Overall, corrosion resistance in steel pipes is essential for maintaining efficient and reliable infrastructure systems in various industries such as oil and gas, water supply, and construction.

Q: How are steel pipes protected against abrasive wear?: Steel pipes are protected against abrasive wear through various methods such as using protective coatings, lining the pipes with wear-resistant materials, or employing internal or external liners. These measures ensure that the steel pipes can withstand the erosive effects of abrasive materials and extend their lifespan.

Q: How are steel tubes represented?: If it is seamless steel pipe, welded steel pipe, the method of expression is: nominal diameter refers to the outer diameter (diameter * wall thickness). The unit is mm. [for example, seamless steel tubes of phi 32 * 3. It means that the nominal diameter (outside diameter) is seamless steel pipe of phi 32mm and wall thickness 3mm.

Q: Are steel pipes suitable for high-temperature applications?: Yes, steel pipes are suitable for high-temperature applications. Steel has excellent heat resistance properties, and steel pipes can withstand high temperatures without deformation or structural failure. Additionally, steel pipes can maintain their strength and durability even under extreme heat conditions, making them a reliable choice for various industrial and commercial applications involving high temperatures.

Q: What are the different types of steel pipe coatings for offshore applications?: There are several types of steel pipe coatings commonly used for offshore applications. These include fusion-bonded epoxy (FBE) coatings, three-layer polyethylene (3LPE) coatings, three-layer polypropylene (3LPP) coatings, and concrete weight coatings. Each of these coatings offer different levels of protection against corrosion and abrasion in offshore environments, and the choice of coating depends on factors such as the specific offshore application, the surrounding environment, and the durability requirements.

Q: Is there any difference between HFW steel pipe and ERW steel pipe?: The difference between ERW (longitudinal resistance welding) and HFW (high frequency welding) is mainly due to the different principle.

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