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Complete List of Steel Bar Grade Symbols

Complete List of Steel Bar Grade Symbols

2023-05-18

Rebar marking in the graphical method of reinforced concrete components: Generally, the method of using outgoing lines is used, and there are two specific annotation methods: 1。 Number, diameter, and grade of labeled steel bars: 3 Ф 203: represents the number of steel bars Ф： Denotes the diameter symbol of the steel bar grade 20: Denotes the diameter of the steel bar 2。 Label the grade, diameter, and center distance of adjacent steel bars Ф 8 @ 200： Ф： Denotes the diameter symbol of the steel bar grade 8: Denotes the diameter of the steel bar @: Equal center distance symbol 200: Center distance between adjacent steel bars (≤ 2

Grades and specifications of hot-rolled low-carbon steel discs

Grades and specifications of hot-rolled low-carbon steel discs

2023-05-04

Brand Q195L: Specifications φ 5.5、 Φ 6.5、 Φ 8.0、 Φ 10.0、 Φ 12.0、 Φ 14.0、 Φ sixteen Brand Q235: Specifications φ 5.5、 Φ 6.5、 Φ 8.0、 Φ 10.0、 Φ twelve Brand QYL1: Specification φ 5.5、 Φ six point five Brand QYL2: Specification φ 5.5、 Φ six point five

How does heat treatment affect the surface quality of stainless steel?

How does heat treatment affect the surface quality of stainless steel?

2023-04-19

The surface of stainless steel wire is uneven, and during heat treatment, it is necessary to evenly form oxide skin. To achieve this, the quality of the surface of stainless steel wire mainly depends on the pickling process after heat treatment, and full attention should be paid to the heating of heat treatment or surface cleaning before heat treatment. The relationship between the surface quality of stainless steel wire and heat treatment.

Channel steel specification setting

Channel steel specification setting

2023-04-12

The specifications of channel steel are mainly represented by dimensions such as height (h), leg width (b), waist thickness (d), etc. Domestic channel steel specifications range from 5-40, which means the corresponding height is 5-40cm. Channel steel is divided into ordinary channel steel and light channel steel. The specifications of hot-rolled ordinary channel steel are 5-40 #. The specifications of hot-rolled flexible channel steel supplied through agreement between the supply and demand parties are 6.5-30 #. Channel steel is mainly used in building structures, vehicle manufacturing, other industrial structures, and fixed cabinets, and is often used in conjunction with I-beams.

APPLICATION OF MEDIUM AND LOW PRESSURE STEAM BOILER PIPE

APPLICATION OF MEDIUM AND LOW PRESSURE STEAM BOILER PIPE

2023-04-06

Medium and low pressure steam boiler pipe is made of steel ingot or solid pipe blank through perforation, and then made by hot rolling, cold rolling or cold drawing. Seamless steel pipe has a tight position in China’s steel pipe industry. According to incomplete statistics, there are about 240 seamless pipe manufacturing enterprises in China, about 250 seamless steel pipe units, and an annual output of about 4.5 million tons. From the perspective of caliber, ＜ φ 76, accounting for 35%, ＜ φ 159-650, accounting for 25%. In terms of types, 1.9 million tons of general purpose pipes, accounting for 54%; 760000 tons of kerosene pipes, accounting for 5.7%; 150000 tons of hydraulic prop and tight pipe, accounting for 4.3%; Stainless pipe, bearing pipe and automobile pipe are 50000 tons, accounting for 1.4%.

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