API pipe mill is specialized for manufacturing straight welded pipe for petroleum and gas pipe lines. Taking hot-rolled steel as raw material, it produces required pipes through cold roll forming and suitable welding methods like H.F. welding, submerged arc welding and so on. The whole production line adopts ‘ZTF’ forming technology. With our strong manufacturing and R&D team, ZTZG has successfully developed and manufactured the world largest straight welded API pipe line with 720mm OD for Russia in 2018.
Technical Flow:
Uncoiling →Head Straightening →Shear & Welder → Accumulator →Edge Milling→ Forming → H.F. Induction Welding → Burr Removing→ Medium frequency annealing→ Cooling →Ultrasonic flaw detection→ Sizing → Cutting → End Chamfering →Hydro Testing →Weighing& Measuring& Spray →Run out table → Checking & Collecting → Accessing Warehouse
| Product&yield | Round Pipe | 8-720mm |
| Length | 6-16M | |
| Production Speed | 10-60M/Min | |
| Production capacity | 10,000-180,000ton/year | |
| Consumption | Mill installed capacity | 220-2500 kw |
| Line Area | 40m(length) ×3.8m (width)-400m(length) ×40m (width) | |
| worker | 6-8 workers | |
| Raw Material | Carbon Steel coil | L245,L360,A53,J55,N80 ,X42,X46,X52,X56,X60,X65,X70 |
| Width | 63-2400MM | |
| Coil ID | Φ610mm-760mm | |
| Coil OD | Φ1300mm-2300mm | |
| Coil Weight | 2-30ton |
1. High strength, high toughness, and corrosion resistance of raw materials;
2. The equipment has high strength, high precision and occupies large ground;
3. The equipment has the characteristics of fast roll change without dismantling the main shaft and archway, and the common rate of roll mold is high;
4. Multi-procedure inspection and flaw detection are required; The finishing quality of pipe end is required to be high.
5. Production of high steel grade, large diameter, large wall thick steel pipe products.
After absorbing advanced pipe making technology from both abroad and domestic, our innovative designed production line and each single unit of the production line are not only economical but also practical. Passed ISO9001 quality system certification and participated in the preparation of a number of industry standards.
ZTZG support customization according to international standards in each region, and provide regular technical information and technical training support.