Front Swing Spiral Welded Pipe Mill Factory

Introduction

The front swing spiral welded pipe mill is to open and level the steel coil through the mill equipment, and then feed it into the forming machine at some angles. By using the principle of three-roller winding machine and some angles, a continuous round pipe is formed, and the continuous spiral weld is welded by submerged arc welding machine. When the steel coil is coiled, uncoiled, levelled and subject to shearing butt welding, the main machine should stop for waiting, and after the butt welding of the steel coil is completed, the main machine should start for production. The front swing spiral welded pipe mill adopts intermittent production mode, which has the advantages of less investment and simple operation.

According to the different applications of products, the front swing spiral welded pipe mill is divided into API standard model and national standard model. API standard model is used to produce oil and natural gas (long-distance) transmission pipes, which have very high requirements on steel pipe materials and quality, and also have very high requirements on mill equipment and inspection equipment. The national standard models are used for short-distance natural gas transportation, water pipes, urban pipe network construction, structural pipes and pillar-beating pipes. The material and quality requirements of steel are also high, which is second only to API standard.

Model

S/N	Model	Spec. (mm)	Plate Width (mm)	Plate Thickness (mm)	Installed Capacity (kW)	Land Area (m²)
1	HMQL×-426	Φ219-Φ426	300-600	3-14	200	24×200
2	HMQL×-529	Φ219-Φ529	300-800	3-16	300	24×200
3	HMQL×-630	Φ219-Φ630	300-1000	3-18	400	24×200
4	HMQL×-720	Φ219-Φ720	300-1200	4-25.4	500	24×200
5	HMQL×-820	Φ219-Φ820	350-1300	3-14	500	24×200
6	HMQL×-1020	Φ273-Φ1020	350-1300	3-16	800	24×200
7	HMQL×-1420	Φ325-Φ1420	500-1600	3-18	1000	24×200
8	HMQL×-1620	Φ426-Φ1620	500-1600	4-25.4	1500	30×300
9	HMQL×-1820	Φ508-Φ1820	500-2000	4-25.4	1500	30×300
10	HMQL×-2020	Φ508-Φ2020	500-2000	4-25.4	1500	30×300
11	HMQL×-2400	Φ508-Φ2400	500-2000	4-25.4	1800	30×300
12	HMQL×-3000	Φ610-Φ3000	500-2000	4-25.4	1800	30×300
13	HMQL×-3500	Φ720-Φ3500	600-2000	4-25.4	2000	30×300

Technology Flow

Coiling-Uncoiling-levelling-Shearing butt welding-Edge milling machine-Delivery machine-Pre-bending and guide plate-Forming-Internal welding-External welding-Tracking cutting-Pull out-Internal and external weld repair-Pipe end expansion-X-ray inspection-Hydrostatic test-Flat chamfering-Ultrasonic inspection-Pipe end filming-Weighing, measuring length and spraying labels-Finished product collection.