Zhonggang Haohai (Shandong) Iron and Steel Co., Ltd. -Seamless Steel Pipe,OCTG

Welcome to Shandong Haohai Iron and Steel Co., Ltd

WhatsApp : +86 18615692579 E-mail : info@zghaohaisteel.com

PRODUCT CENTER

The company is mainly engaged in steel production, sales and other businesses. The main products include various types of steel plates, tubes, bars, profiles and other materials and types of steel. At the same time, it is the first-level agent of many large steel mills in China, with a certain price advantage.

201 stainless steel industrial square pipe

S235JR Carbon steel square pipe

Carbon steel plate

SGCC Z275 Galvanized steel sheet

Stainless steel coil

Aluminium Sheet Coil

Carbon steel pipe

316L 304 Stainless steel pipe

COMPANY PROFILE

SHANDONG HAOHAI IRON AND STEEL CO., LTD.

20 +

20 years experience

1000 +

More than 1000 partners

100 +

Product export country

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APPLICATION AREA

NEWS CENTER

2023-06

What are the welding methods of steel pipe classification

According to different welding methods, it can be divided into arc welding pipe, high frequency or low frequency resistance welding pipe, gas welding pipe, furnace welding pipe, Bondi pipe, etc.

2023-06

Connection mode of stainless steel pipe

Stainless steel pipe connection modes are various, the common types of pipe fittings are compression type, compression type, loose type, push type, push thread type, socket welding type, loose type flange connection, welding type and welding and traditional connection combination of derived series connection. These connection modes, according to their different principles, its scope of application is also different, but most of them are convenient to install, firm and reliable. The sealing ring or gasket material used for connection is mostly made of silicone rubber, nitrile rubber and EPthree rubber which meet the requirements of national standards, so as to avoid the worries of users.

2023-06

Steel pipe without seams

Steel tubes made of a single piece of metal with no seams on the surface are called seamless steel tubes. According to the production method, seamless pipe is divided into hot rolled pipe, cold rolled pipe, cold drawn pipe, extrusion pipe

2023-06

Performance index of steel pipe

The mechanical property of steel is an important index to guarantee the final serviceability (mechanical property) of steel, which depends on the chemical composition and heat treatment system of steel. In the steel pipe standard, according to different use requirements, the tensile properties (tensile strength, yield strength or yield point, elongation) and hardness, toughness indicators, as well as user requirements of high, low temperature performance.

2023-06

Stainless steel pipe according to the material divided into what

Stainless steel pipe according to the production method is divided into seamless pipe and welded pipe two categories, seamless steel pipe can also be divided into hot rolled pipe, cold rolled pipe, cold drawn pipe and extrusion pipe, cold drawing, cold rolling is the secondary processing of steel pipe; Welded pipe is divided into straight seam welded pipe and spiral welded pipe.

2022-10

Application requirements of stainless steel tubes

The main use of stainless steel is the exhaust system, accounting for more than 1/2 of the total automobile stainless steel consumption, 80% for ferritic stainless steel. The exhaust gas produced by the automobile engine is discharged from the muffler through the exhaust gas intake pipe, front pipe, hose, converter and center pipe. Exhaust system commonly used steel 409L, 436L and so on. Automobile mufflers mainly use stainless steel welded pipe. It is estimated that stainless steel pipes used in automobiles account for about 1.5% of the total downstream use of stainless steel pipes, and the use ratio of stainless steel seamless pipes and welded pipes is about 2:1.

Email ：info@zghaohaisteel.com
Phone : +86-18615692579
WhatsApp : +86-18615692579
Tel : +86-18615692579
Address : 357 Gongye South Road, Lixia District, Jinan City, Shandong Province

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