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Henan Shang Yi Steel Trade Co., Ltd. is an enterprise specializing in steel sales and processing, cargo transportation and other services. It is committed to the production of wear-resistant steel plates, low-alloy high-strength plates, boiler vessel steel plates, composite steel plates, and extra-wide and extra-thick steel plates. Professional services such as bulk sales, warehousing, cutting and distribution. Products cover mining equipment, cement machinery, metallurgical machinery, construction equipment, ship equipment, power equipment, port equipment, transportation and general machinery manufacturing and other industries. The company's steel plate processing plant can cut semi-finished products and special-shaped parts according to user requirements, and can transport on behalf of customers. It is sold all over the country and exported overseas, and has won praise and trust from customers and markets.

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CONTACT US

Customer satisfaction is our first goal!

Phone

+86 13526880645

E-Mail

systeelplate@outlook.com

Address

No.186, Zi Dong Road, Guan Cheng District, Zheng Zhou, He Nan Province.

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Two ways of high-frequency straight seam welded pipe ...
Two ways of high-frequency straight seam welded pipe ...

Two methods of high frequency straight seam welding: contact welding and induction welding. Contact welding is a pair of copper electrodes that are in contact with both sides of the welded steel pipe. The induced current has good penetrability.

Petrosadid: Electric Resistance/ Fusion Welded (ERW and EFW)
Petrosadid: Electric Resistance/ Fusion Welded (ERW and EFW)

High frequency welding (HFW) steel pipe is that ERW pipe produced with a welding current frequency equal to or greater than 70 kHZ. Through high-frequency current welding resistance, the heat generated in the contact objects, so the objected surface are heated to the plastic state, then with or without forging to achieve a combination of steels.

Types and process of welding pipe-ERWLWCWSAW pipes ...
Types and process of welding pipe-ERWLWCWSAW pipes ...

ERW including high frequency welded steel pipe(HFW) and low frequency welded steel pipe(LFW).Over time, the welds of low frequency ERW pipe was found to be susceptible to selective seam corrosion,hook cracks,and inadequate bonding of the seams,so low frequency ERW is no longer used to manufacture pipe.The high frequency process is still being used to manufacture pipe for use in new pipeline …

Standards For Steel Tubes - # Black Cat Insulation
Standards For Steel Tubes - # Black Cat Insulation

A618 – A618-99 : Specification of hot ,welded, low-alloy structure tubes, ,high, strength castings. Structure Steel ,Pipe, . Mechanical Tubing: A511 – A511-96 : Specification of cast stainless steel mechanical tube. A512 – A512-96 : Technical specifications Carbon steel ,welded pipe, body with cold drawn joints.

Identification Method of Seamless Steel Pipe and Welded ...
Identification Method of Seamless Steel Pipe and Welded ...

Performance of Welded Steel Pipe Welded steel pipe has the following properties because it is processed by high frequency welding and cold rolling. First, the thermal insulation function is good. The heat loss of welded steel pipe is relatively small, only 25%, which is not only conducive to transportation, but also reduces the cost.

Pre-Insulated Pipes for LTHW with fusion welded joints
Pre-Insulated Pipes for LTHW with fusion welded joints

High-frequency welded St. 37.0 BW, complying with EN 253. Testing pressure min. 50 bar or eddy-current test. Supplied in lengths of 6, 12 and 16 m. Sizes DN 25 to DN 1000. Steel-Flex. The carrier pipe is St. 30 AI seamless. Copper. Annealed copper F22 to DIN 1787/1767, corresponding to SIS 5015-02. Supplied in coils of up to 100m dependant on pipe size.

Inquiry Email

Business cooperation

+86 13526880645

Company address

No.186, Zi Dong Road, Guan Cheng District, Zheng Zhou, He Nan Province.