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219mm-529mm carbon steel pipe production line:, Diameter: 219mm-529mm, Wall thickness: 5mm-11mm, Material: X42-X80 - details see: https://www.machineto.com/219mm-529mm-carbon-steel-pipe-production-line-10081865

The introduction of the spiral welded pipe mill(SAW mill):

The steel coil is unfolded , leveled and sent to the forming machine in certain angle by related equipment. Continual round pipes are formed in the certain angle with theprinciple of three-roll forming machine. Continual spiral welding seams are welded by submerged-arc welding machine.

According to the different functions of our products, the spiral welded pipe mills are divided in toAPI standard model,national standard modelandspecial purpose model. API standard model mainly produces the delivery pipe for petroleum or natural gas (long distance). Thereby, the material and quality of the steel pipe need to be very good. The requirements for mill equipment and testing equipment are also very high. National standard model produces the pipe used for short distance delivery of natural gas or water, the pipeline construction in the city, the structure pipe, column pipe and so on. The requirements for the material and quality of the steel are also very high, second to that of API standard. Special purpose mill is used for some special purposes. For example, our company developed the special 60~214 mill aiming at the function of petroleum filter.

The specification of our products isfromΦ9 0 toΦ3500. The thickness of the wall isfrom 1mm to 25.4mm. The material of our products is fromQ235 to X80. Besides, special material such as the stainless steel is included. And all of them cover all our mills.

Production process:

Loading coil-uncoiling-leveling-cutting and coil welding-circle shearing-edge milling machine-main driver–prebending and guide board-forming-internal welding-external welding-tracking and cutting off-extracting-cutting to be alignment-hydrotester-pipe ends facing&chamfering-X ray inspection-UT inspection-spraying-collection of the finished products

The available type of SAW mill:

No.	Model	Specification	coil width(mm)	Thickness(mm)	Coil weight(ton)	Capacity(kw)	Area(M2)
1	LHJZ-400	Φ219~Φ426	400~750	5~10	10	180	18×180
2	LHJZ-500	Φ219~Φ529	400~800	5~11	15	200	18×180
3	LHJZ-600	Φ219~Φ630	450~1050	6~12.7	20	240	21×180
4	LHJZ-700	Φ219~Φ720	500~1250	5~14	20	260	21×180
5	LHJZ-800	Φ219~Φ820	500~1300	6~18	30	380	24×180
6	LHJZ-1000	Φ219~Φ1020	500~1300	6~20	30	390	24×180
7	LHJZ-1400	Φ325~Φ1420	500~1560	6~22	30	400	26×180
8	LHJZ-1600	Φ426~Φ1620	500~1560	6~25.4	40	510	30×180
9	LHJZ-1800	Φ508~Φ1820	1100~1600	8~25.4	40	510	30×180
10	LHJZ-2000	Φ508~Φ2020	1200~2000	8~25.4	40	530	30×180
11	LHJZ-2400	Φ508~Φ2400	1200~2000	8~25.4	40	530	30×180
12	LHJZ-3000	Φ508~Φ3000	1200~2000	8~25.4	40	530	30×180