EN10305-2 E215 E235 Welded Steel Pipe , Precision Cold Drawn Steel Pipe for Machinery

EN10305-2 E215 E235 Welded Steel Pipe, Precision Cold Drawn Steel Pipe for Machinery

Description

EN10305-2 welded precision cold drawn steel tubes are manufactured from electric welded pre-tubes through cold drawing or other suitable processes. These tubes are designed for high-precision applications in the machinery and automotive sectors, offering excellent dimensional accuracy and surface quality. The absence of welds used for joining lengths of flat rolled strips prior to forming ensures superior structural integrity.

Size Range

• Outside Diameter (O.D.): 10 – 89 mm
• Wall Thickness (W.T.): 0.5 – 10 mm

Steel Grades

• E195 (1.0034)
• E235 (1.0308)
• E275 (1.0225)
• E355 (1.0580)
• E215 (1.0212)

Manufacturing Process

• ERW + DOM (Electric Resistance Welded + Drawn Over Mandrel)
• Cold drawn from welded pre-tubes
• No longitudinal weld seam joining prior to forming

Key Advantages

• High concentricity and dimensional precision
• Cost-effective alternative to seamless tubes
• Consistent mechanical properties
• Suitable for high-stress mechanical applications

Chemical Composition (max values, % by weight)

Mechanical Properties (Minimum Values at Room Temperature)

Testing & Inspection

• Tensile test
• Flattening test
• Drift expanding test
• Dimensional inspection
• Roughness measurement
• Visual examination
• Non-destructive testing
• Leak-tightness testing

Competitive Advantages

• High-quality raw material source
• Prompt delivery according to purchase order and agreement
• Strict compliance with EN10305-2 standards and customer specifications
• Experienced export team with response within 24 hours

Jiangsu Hongbao Group (Pipe) Co., Ltd. (Zhangjiagang Hongda Pipe Co., Ltd.) is a high-tech company in Jiangsu province. The company has a registered capital of RMB 89 million, covers an area of 130,000 square meters, employs 600 staff, and has annual sales of RMB 400 million. The company is specialized in producing and selling high-end bearing tubes, auto alloy tubes, titanium and titanium alloy tubes, nickel and nickel-based alloy tubes, refrigerator condenser tubes, aluminum and aluminum alloy tubes and the like.

The company focuses on the development of new products, and has successively developed high diameter-wall ratio titanium-molybdenum-nickel alloy seamless steel tubes, nuclear power plant reactor driving mechanism used martensite stainless steel seamless steel tubes, auto critical components used alloy steel tubes, high-end refrigerator used corrosion-resistance galvanized condenser tubes, marine engineering and complex environment oilfield used high-strength corrosion-resistance G3 tubes, among which, nuclear power plant reactor driving mechanism used martensite stainless steel seamless steel tube has obtained high-tech product certificate of the province.

At present, the company has obtained authorization for 7 patents for invention, and 8 patents for utility model.