大口径冷拔无缝钢管生产的生产制造工艺可分为冷拔、冷轧和热轧三种基本方式，钢管的材质为10#、20#、35#、45#称为 普通钢管， 16Mn介于普通冷拔钢管和合金钢管之间称为低合金钢管，钢管的材质为27SiMn、12Cr1MoV、10CrMo910、15CrMo、35CrMo以及不锈钢管统称为合金钢管。按照用途分为结构用无缝钢管；输送用冷拔无缝钢管；锅炉用冷拔无缝钢管；锅炉用高压冷拔无缝钢管；化肥设备用高压冷拔无缝钢管；地质砖探用冷拔无缝钢管；石油砖探用冷拔无缝钢管；
The manufacturing process of large-caliber cold-drawn seamless steel pipe can be divided into three basic modes: cold-drawn, cold-rolled and hot-rolled. The material of steel pipe is 10, 20, 35, 45, which is called ordinary steel pipe. The material of 16Mn between ordinary steel pipe and alloy steel pipe is called low-alloy steel pipe. The material of steel pipe is 27SiMn, 12Cr1MoV, 10CrMo910, 15CrMo, 35C. RMo and stainless steel pipes are collectively called alloy steel pipes. According to its use, it can be divided into structural seamless steel pipe, cold-drawn seamless steel pipe for transportation, boiler seamless steel pipe, boiler seamless steel pipe, chemical fertilizer equipment seamless steel pipe, geological brick exploration seamless steel pipe, petroleum brick exploration seamless steel pipe; 4.高压锅炉用冷拔无缝钢管（GB5310-1995）是用于制造高压及其以上压力的水管锅炉受热面用的优质碳素钢、合金钢和不锈耐热钢冷拔冷拔无缝钢管。
4. Cold-drawn seamless steel pipes for high pressure boilers (GB5310-1995) are high-quality carbon steel, alloy steel and stainless steel cold-drawn seamless steel pipes for heating surfaces of water-pipe boilers with high pressure and above.
5. High-pressure cold-drawn seamless steel pipes for chemical fertilizer equipment (GB6479-2000) are high-quality carbon structural steel and alloy steel cold-drawn seamless steel pipes suitable for chemical equipment and pipes with working temperatures ranging from - 40 to 400 degrees C and working pressures ranging from 10 to 30 Ma.
6. Cold-drawn seamless steel tubes for petroleum cracking (GB9948-88) are suitable for furnace tubes, heat exchangers and cold-drawn seamless steel tubes in petroleum refineries.
7. Geological drilling steel pipe (YB235-70) is used for core drilling by geological departments. It can be divided into drill pipe, drill collar, core pipe, casing and sedimentation pipe.
8. Cold-drawn seamless steel pipe for diamond core drilling (GB3423-82) is a cold-drawn seamless steel pipe for drilling rods, core rods and casing of diamond core drilling.
9. Oil Drilling Pipe (YB528-65) is a cold-drawn seamless steel pipe used for both ends of oil drilling. The steel pipe is divided into two kinds, namely, split wire and non-cut wire. The wire pipe is jointed by joints, and the non-cut wire pipe is joined by butt welding with tool joints.
10. Carbon steel cold-drawn seamless steel pipes for ships (GB5213-85) are cold-drawn seamless steel pipes for making class I, class I I, boilers and superheaters. Carbon steel cold-drawn seamless steel pipe wall working temperature does not exceed 450 C, alloy steel cold-drawn seamless steel pipe wall working temperature exceeds 450 C.
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