The raw material for rolling seamless pipes is round pipe blanks. The round pipe blanks are cut by a cutting machine into a billet with a length of about 1 meter and sent to the furnace for heating via a conveyor belt. The billet is fed into the furnace and heated at a temperature of approximately 1200 degrees Celsius. The fuel is hydrogen or acetylene. The temperature control in the furnace is a key issue. After the round tube is out of the furnace, it must be pierced through a pressure punching machine. Generally, the more common piercing machine is the tapered roller piercing machine. This type of piercing machine has high production efficiency, good product quality, large perforation diameter expansion, and can wear a variety of steel types. After piercing, the round tube billet is cross-rolled, tandem-rolled or squeezed by three rolls successively.
Standard | ASTM, GB, JIS, AISI, EN, DIN |
Material | 201, 304, 304L, 304N, 304LN, 305, 309S,316, 316L, 316Ti, 317, 321, 405, 430, 904L, 2205, etc |
Surface | NO.1, NO.4, 2B, BA, Hair Link, 8K, Brush, Embossed and Mirror Finished or as your required |
Width | 100mm-2000mm or as required |
Length | 1000mm-6000mm or customized |
Thickness |
0.3mm-3mm(cold rolled) 3mm-120mm(hot rolled) |
Application |
Petroleum and chemical industries, furniture, kitchen appliances, decoration, Construction field, equipment and medical devices |
Package |
Standard export sea-worthy packing: 1. Bundle package 2. Container or bulk 3. Wooden case, wooden pallet package 4. Special according to customer’s request |
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