What are the characteristics of inferior stainless steel thick wall pipes?

HAOSTEEL GROUP Co., Ltd. is a national high-tech stainless steel products enterprises, the main products are stainless steel seamless steel pipe, stainless steel welded steel pipe, steel pipe fittings and flanges, the company set stainless steel smelting, manufacturing processing, sales and technology development in one of the large stainless steel professional manufacturers. The company occupies a floor area of 300,000 square meters and has more than 800 employees.

The company specializes in the production of high temperature (nickel base) alloy, austenite, duplex steel, urea grade stainless steel and other series of steel pipes, pipe fittings, round steel, coil, flange and other products. The company is equipped with an annual output of 50,000 tons of stainless steel smelting equipment, an annual output of 25,000 tons of stainless steel seamless pipe production line, an annual output of 20,000 tons of welded pipe production line, an annual output of 5,000 tons of pipe fittings production line, etc., according to customer demand, According to GB, ASTM, JIS, DIN and other standards to produce Φ6 ~ Φ762×0.5 ~ 70mm stainless steel seamless pipe, Φ15 ~ Φ2200×0.5 ~ 80mm stainless steel welded pipe, pipe fittings and various stainless steel ingot, round steel and so on.

Nowadays, stainless steel thick wall tube in the market flow is very large, in order to avoid buying some of the poor quality stainless steel thick wall tube produced by manufacturers to save costs, we should learn to distinguish the advantages and disadvantages of thick wall tube.

The characteristics of inferior stainless steel thick wall pipes are as follows:

(1) Folding appears

(2) The surface of the steel pipe is often pocked

(3) The surface is prone to scarring

(4) The surface is prone to cracks

(5) Easy to be scratched

(6) The surface has no metallic luster, and is light red or similar to the color of pig iron

(7) Steel pipe transverse bar thin and low, often appear dissatisfied phenomenon

(8) Rich in impurities and the density of steel is small

(9) The cross section of the steel pipe is oval

(10) The inner diameter of the steel pipe fluctuates greatly

(11) The longitudinal bar of rebar is often wavy

(12) Generally shoddy thick wall pipe manufacturers do not drive, so the packaging is relatively loose

The above are the obvious characteristics of inferior stainless steel thick wall pipes, and the trademark and printing of good quality stainless steel thick wall pipes are relatively standardized.

HAOSTEEL has always been adhering to the "high quality, heavy service, for the global industrial equipment to provide safe and reliable stainless steel materials" for the purpose. The company has imported from Germany direct reading spectrometer, ultrasonic flaw detector, eddy current flaw detector, hydraulic testing machine, X-ray fluoroscope, nitrogen and oxygen analyzer, impact testing machine, automatic carbon and sulfur analyzer, endoscope and other inspection and testing equipment. Advanced inspection and testing equipment and strict scientific management to ensure that each batch of products can meet customer needs.

HAOSTEEL has passed ISO9001 certification of quality management system, ISO14000 certification of environmental management system and OHSAS18000 certification of occupational health management system. Obtain special equipment manufacturing license.

The company's products are widely used in petrochemical industry, oil and gas fields, solar polysilicon, ocean engineering, shipbuilding, boiler heat exchanger, aerospace, environmental protection equipment, mechanical processing, automobile, medicine and food, hydropower, nuclear power, urea fertilizer, refrigeration, new energy equipment and other fields. We are willing to cooperate with friends from all walks of life to create a better future.