2. Pipeline API SPEC 5L, steel grade: B, X42, X46, X52, specification: 1/4 "-28 ",13.7-71.2mm.

3. Shame TMA106/A53/API 5GR. B, steel grade: B, specification: 1/4 "-28 ",13.7-71.2mm.

4. Seamless mild steel tubes for heat exchangers and condensers ASTM A 179, specifications: 3/4 "and 1".

5.-40℃-101℃ ASTM A333, specification:1/4 "-28",13.7-71.2mm.

6. German standard DIN2448/ 1629 seamless steel pipe, steel numbers: ST37, ST44 and ST52, specifications:1/4 "-28",13.7-711..

7. Heat-resistant seamless steel pipe (heat strength pipe) DIN17175-1979, steel grade: carbon structural steel ST35.8-ST45.8/I, ST35.8-ST45.8/III, alloy structural steel15m. Specification: 1/4 "-28 ",13.7-711.2mm1. American standard ERW high frequency welded pipe ASTM A 106, A53, specification:1/2 "-

2. British standard ERW high frequency welded pipe BS 1387, specifications:1/2 "-12", 2 1.3-323.8 mm 1, seamless steel pipe for structure (GB/T 8/KLOC)

2. Seamless Steel Pipe for Fluid Transportation (GB/T8 163-2008) is a universal seamless steel pipe for conveying fluids such as water, oil and gas.

3. Seamless Steel Pipe for Medium and Low Pressure Boilers (GB3087-2008) is a hot-rolled and cold-drawn (rolled) seamless steel pipe of high-quality carbon structural steel, which is used to manufacture superheated steam pipes, boiling water pipes, superheated steam pipes and arch bricks of various structures of medium and low pressure boilers.

4. Seamless Steel Pipe for High-pressure Boiler (GB53 10-2008) is a high-quality carbon steel, alloy steel and stainless heat-resistant steel seamless steel pipe used for manufacturing the heating surface of high-pressure and above water-tube boilers.

5. The high-pressure seamless steel pipe for fertilizer equipment (GB6479-2000) is a kind of high-quality carbon structural steel and alloy steel seamless steel pipe suitable for chemical equipment and pipelines with working temperature of -40~400℃ and working pressure of 10~30Ma.

6. Seamless Steel Pipe for Petroleum Cracking (GB9948-2006) is a seamless steel pipe for furnace tubes, heat exchangers and pipelines in refineries.

7. Steel pipes for geological drilling (YB235-70) are used by geological departments for core drilling, and can be divided into drill pipes, drill collars, core pipes, casing pipes and settling pipes according to their uses.

8. Seamless Steel Pipe for Diamond Core Drilling (GB3423-82) is a seamless steel pipe for drill pipe, mandrel and casing for diamond core drilling.

9. Oil drilling pipe (YB528-65) is a kind of seamless steel pipe with both ends thickened internally or externally, which is used for oil drilling. There are two kinds of steel pipes: turning wire and non-turning wire. The turning wire is connected with the joint, and the non-turning wire is connected with the tool joint by butt welding.

10. Marine Carbon Steel Seamless Steel Pipe (GB52 13-85) is a carbon steel seamless steel pipe used for manufacturing the first-class pressure-resistant piping system and the second-class pressure-resistant piping system of ships, boilers and superheaters. The working temperature of carbon steel seamless steel pipe wall shall not exceed 450℃, and the working temperature of alloy steel seamless steel pipe wall shall not exceed 450℃.

1 1. Seamless Steel Pipe for Automobile Bushing (GB3088-82) is a high-quality carbon structural steel and alloy structural steel hot-rolled seamless steel pipe for manufacturing automobile bushings and axle housings.

12. Diesel Engine High-pressure Tubing (GB3093-2002) is a cold-drawn seamless steel pipe for diesel engine injection system high-pressure tubing.

13. Seamless Steel Pipe with Precision Inner Diameter for Hydraulic and Pneumatic Cylinder (GB87 13-88) is a cold-drawn or cold-rolled steel pipe with precision inner diameter for hydraulic and pneumatic cylinder, which is manufactured by Liaocheng Diyue Metal Material Co., Ltd..

14, cold-drawn or cold-rolled Liaocheng Diyue Metal Material Co., Ltd. (GB3639-2000) is a cold-drawn or cold-rolled Liaocheng Diyue Metal Material Co., Ltd., which has high dimensional accuracy and good surface finish and is used in mechanical structures and hydraulic equipment. Choosing "Liaocheng Diyue Metal Material Co., Ltd." to manufacture mechanical structure or hydraulic equipment can greatly save processing time, improve material utilization rate and improve product quality.

15, structural stainless steel seamless steel pipe (GB/T 14976-2002) is widely used in chemical industry, petroleum, textile, medical treatment and other industries.