Hollow Rod 4130 Seamless Steel Pipe Alloy 100mm

Hollow Rod 4130 Seamless Steel Tube

     4130 hollow rod has high strength and toughness, high hardenability, and the critical hardening diameter in oil is 15-70mm; the thermal strength of steel is also good, and it has sufficient high-temperature strength below 500°C, but at 550°C Its strength drops significantly; when the alloying elements are at the lower limit, the welding is quite good, but when it is close to the upper limit, the weldability is moderate, and it needs to be preheated to above 175°C before welding; the machinability of the steel is good, and the plasticity is medium during cold deformation; The range of 300 ~ 350 ° C has the first type of temper brittleness; there is a tendency to form white spots.

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4130 hollow rod is usually used in quenched and tempered state, when the carbon content is the lower limit steel can also be used as carburized steel that requires higher core strength. In the medium-sized machinery manufacturing industry, it is mainly used to manufacture quenched and tempered parts with large cross-sections and working under high-stress conditions, such as shafts, main shafts, and high-load control wheels, bolts, stud bolts, gears, etc.; in the chemical industry It is used to manufacture welded parts, welded structures composed of plates and pipes, and high-pressure conduits whose temperature does not exceed 250°C in a medium containing nitrogen and hydrogen; it is used to manufacture fasteners that work below 450°C in the steam turbine and boiler manufacturing industries. Flanges and flange covers subject to high pressure below 500 °C.

We specialize in all kinds of imported and domestic high-pressure boiler tubes, petroleum cracking tubes, alloy steel, stainless steel, low temperature resistant, corrosion resistant steel, alloy pipe fittings and special steel materials, etc.

The company has three seamless steel pipe piercing production lines, six hot rolling production lines, and nine cold drawing production lines. The company can currently produce alloy seamless steel pipes, structural pipes, thick-walled seamless steel pipes, Special seamless steel pipes such as seamless steel pipes for oil cylinders, fluid delivery pipes and special-shaped seamless pipes can also be customized according to customer requirements. Thick-walled steel pipes, customized oval seamless pipes, seamless square pipes, rectangular pipes, hexagonal pipes, outer circle inner oval pipes, inner thread seamless pipes, outer flat inner circle and other special-shaped steel pipes. Products are widely used in engineering, coal mines, textiles, electric power, boilers, machinery, military and other industrial fields.

Why choose us
01. Advanced equipment
It has three production lines of seamless steel pipe piercing units, six production lines of hot rolling, and nine production lines of cold drawing, adopting the most advanced equipment in the world, with a workshop area of 30,000 square meters.
02. High-quality tube billet raw materials
We choose high-quality raw materials. Our base steel comes from well-known brands such as Baosteel and TISCO.
03. Output
Hollow rods, the monthly output is about 10,000-60,000 tons, and the stock is sufficient.
04. Quality inspection
Strict quality inspection standards are implemented, and the products meet ISO and SGS international standards to ensure 100% compliance with customer requirements.
05. Fast delivery
Advanced production management process, from production to delivery, efficient and fast.
06. Sales service
We have professional sales staff in English, Spanish, Portuguese, French, Arabic and Russian, suitable for different markets.