Product Attributes

Model No.: GB L175/ L175P/ L210/ L245/ L290/ L320 / L360 / L390 / L415 /L450 / L485

Brand: Houming

Standard: Bs, Gb, Astm, Jis, Din, Api

Section Shape: Round, Rectangular, Oval, Ltz, Square

Place Of Origin: China

Application: Fluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, Oil Pipe, Chemical Fertilizer Pipe, Structure Pipe

Production Process: Erw

Certification: Bsi, Ce, Ul, Api

Surface Treatment: Galvanized, Copper Coated

Special Tube: Api Pipe, Emt Pipe, Thick Wall Pipe

Whether Alloy: Is Alloy

Tolerance: ±1%, ±10%, ±3%

Category: Seamless Steel Pipe, Welded Steel Pipe, Spiral Welded Pipe, Square tubes

Processing Service: Bending, Welding, Decoiling, Punching, Cutting

Product Name: steel pipe

Supply Ability & Additional Information

Transportation: Ocean,Land

Place of Origin: china

Port: shanghai,qingdao,tianjin

Payment Type: D/A,D/P,T/T,L/C

Incoterm: FOB,CFR,CIF,EXW

Packaging & Delivery

Selling Units:

Metric Ton

Straight Seam High Frequency Resistance Welded Steel Pipe （ERW）

Grade	Outside diameter tolerance mm				Ellipticity mm
	Outer diameter range		Tolerance
API SPEC 5L	219.1--273.1		+1.6/ -0.4		/
	273.2--320		+0.75% D/-0.8		/
	320.1--508		+2.4/-0.8		/
	508.1--610		+2.4/-0.8		2.0%-D
GB/ T9711.1	219.1--273.1		+1.59/-0.4		/
	323.9--508		+2.38/-0.79		/
	509--610		+2.38/-0.79		2.0%-D
GB/ T9711.2	219.1--320		±0.5%-D		1.5%-D
	321--610		±1.6		1.5%-D
API 5CT	219.08--610.0		±1%/-0.5%		/
ASTM A53M	219--610		±1%-D		/
GB/T 3091	219--508		+2.4/-0.8		±0.75%-D
	508.1--610		+3.0/-0.8		±0.75%-D
GB/T 6728	219.1--610		±1%-D		/
SY/T 5768	219--355.5		±1%-D		/
	355.6--610		±0.5%-D		/
GB/T 13793		High precision	Higher accuracy		/
	219--323.9	±0.5%-D	±0.8%-D	±1%-D
	324.0--610	±0.5%-D	±0.8%-D	±1%-D

High frequency electric resistance welded pipe (ERW) outer diameter and wall thickness tolerance

ERW pipe is the abbreviated name of high frequency resistance welded steel pipe, and HFW pipe stands for high frequency welded steel pipe.

High frequency resistance welded steel pipe is made of steel coils, and the pipe weld is parallel to the pipe. It is one of the most versatile tools in agricultural, industrial and construction activities. The manufacturing process of ERW steel pipe includes HFW. ERW welding includes low, medium and high frequency welding, and HFW is particularly suitable for high frequency resistance welding.

ERW steel pipe (ERW straight seam steel pipe) is a high-frequency straight seam electric resistance welded pipe, English Electric Resistance Welding, abbreviated as ERW, which is used to transport gas and liquid objects such as oil and natural gas. It can meet various high and low pressure requirements and currently occupies an important position in the field of transportation pipes in the world.

Steel Tube

1. High-frequency welded pipe refers to ordinary "submerged arc welded steel pipe", which is indicated by "SC" in electrical engineering. It can be used as a water gas pipe or a threading pipe, and is relatively thick.

2. Pipeline pipe is also an electric wire pipe, which is relatively thin, indicated by "T", and can only be used as a threading pipe.

3. ERW pipe is a "high-frequency resistance welded steel pipe". The welding process is different from that of ordinary welded pipes. The weld is formed by melting the parent material of the steel strip body, and the mechanical strength is better than that of ordinary welded pipes.

High Frequency Resistance Welded Steel Tube Deep Processing

In terms of customer service, Henan Houming Company always adheres to the customer-centric approach and provides all-round support from design, production to installation. Our professional team maintains close communication with customers during the project implementation to ensure that every detail can meet customer needs. Whether it is the early stage of scheme design, mid-term production and manufacturing, or later installation and commissioning, we always uphold a rigorous and responsible attitude and strive to achieve perfection in every link. Because of this, customers have given high praise to our product performance and service quality, saying that this cooperation far exceeded expectations.

Deep processing includes common steel welding, laser cutting, flame cutting, etc. We have the ability to do deep processing, provide services, and have our own deep processing factory.

ERW/GB standard grade welded steel pipes can be divided into Q235A/Q235B/Q235C/Q235D/Q275; L175/ L175P/ L210/ L245/ L290/ L320/ L360/ L390/ L415/L450/ L485; L245/ L290/ L320/L360/ L390/ L415/ L450/ L485/ L555 and other brands of high frequency pipes.

About Henan Houming Industrial Co., Ltd.: We are a manufacturer specializing in deep processing of Prefab House, silicon steel, corten steel and wear-resistant plates. Houming adheres to the business philosophy of "seeking truth and being pragmatic" and is committed to providing customers with high-quality products and services. Through continuous technological innovation and process improvement, we have established a good reputation in the industry and won the trust and support of our customers.

ERW pipe outer diameter and wall thickness customization