Year1
- 材质：
- Q235B
- 规格：
- 219mm以上
- 质量等级：
- 正品（受质量异议）
Quality grade symbol Deoxidation method symbol
Quality grade is divided into grades with poor quality and grade with the highest quality. The deoxidation method symbols are and, which respectively represent boiling steel, semi-killed steel, killed steel and special killed steel. However, in the grade representation method, the symbols and can be omitted.
The different grades represent mainly different impact temperatures.
It means no impact, the difference is above degrees, above degrees, above degrees, above degrees, to the difference, refers to the difference in impact temperature in their performance.
They are divided into grades, which are not required for impact toughness test, grade for normal temperature (℃) impact toughness test, grade for ℃ impact toughness test, grade for ℃ impact toughness test, and grade for ℃ impact toughness test. The impact toughness test uses Charpy notch specimens. The impact toughness index is. The above grades of steel are required to meet their respective different temperature requirements. At different impact temperatures, the impact values are also different.
Cangzhou Hongyun Steel Pipe Co., Ltd. is a specialized enterprise integrating the production, sales and export of steel pipes and pipe fittings. The company is located in Cangzhou, Hebei Province, China's pipeline equipment manufacturing base. The company has advanced process equipment and complete testing methods. It has advanced testing equipment such as radiographic flaw detection, ultrasonic flaw detection, hydrostatic testing machine, physical and chemical laboratories and a complete measurement system to ensure that product production and inspection meet standard requirements and meet customer needs.
Our company's main products include seamless steel pipes (hot-rolled, cold-drawn), spiral steel pipes, straight-seam steel pipes, thermally expanded steel pipes, large-diameter thick-walled steel pipes, and alloy steel pipes. The company currently has (Diesel seamless piercing machine) seamless steel pipe production line, American Lincoln double-sided submerged arc welding spiral steel pipe production line, high-frequency straight seam steel pipe production line, medium and high-frequency push machine thermal expansion steel pipe production line, and can produce seamless steel pipes annually. Steel pipe diameter and wall thickness. 10,000-ton double-sided submerged arc welded spiral steel pipe diameter and wall thickness. 10,000-ton straight seam resistance welded steel pipe diameter and wall thickness and 10,000-ton straight seam double-sided submerged arc welded pipe diameter and wall thickness. 10,000-ton thermally expanded seamless steel pipe diameter and wall thickness. The company has large-diameter thick-walled steel pipes with a diameter of 10,000 tons and a wall thickness of 10,000 tons, and stocks 10,000 tons of alloy steel pipes from several major domestic steel mills all year round. Seamless steel pipe implementation standards. Spiral steel pipe implementation standards/ / Straight seam steel pipe implementation standards/. Thermal expansion steel pipe implementation standards. Large-diameter thick-walled steel pipes comply with standards/. Alloy steel pipe implementation standard/.
According to customer requirements, our company can undertake single-layer and double-layer sintered epoxy powder, double-layer polyethylene and three-layer polyethylene, double-layer polypropylene and three-layer polypropylene, and epoxy coal pitch anti-corrosion for steel pipes. Coating pipeline external anti-corrosion engineering and polymer anti-corrosion coating anti-corrosion, cement mortar pipeline inner wall anti-corrosion and other pipeline inner coating pipeline anti-corrosion projects with various anti-corrosion structures, implement, / standard, are widely used in long-distance transportation of oil, natural gas, coal gas, water, etc. Pipeline and petrochemical enterprise urban centralized heating pipe network, gas pipe network and other projects, the product has many advantages such as high strength, high pressure resistance, easy installation, low cost, long service life, etc., and is well received by users.
The company relies on its rich technical strength, advanced management experience, excellent sales services, strict quality management system and scientific overall marketing methods to go hand in hand with you and develop together. The company adheres to the principle of being honest and doing things with integrity, and thanks new and old customers with the best quality, the lowest price, and the most perfect after-sales service. We sincerely hope to establish a long-term cooperative relationship with you for mutual benefit and win-win cooperation< br/>
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