Steel Butt Longitudinally-Welded Pipes
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longitudinally welded pipes
Qingdao Wuxiao Group Co. , Ltd can offer every type of steel butt weld pipes and hot galvanized steel pipe such as the longitudinal seam submerge welded structural pipes with large diameter, and the pipes inner diameter is 406mm or above.
It can used in the fields such as power transmission steel tower, papermaking, energy, transportation, light industry, machinery, every type of construction frameworks, and also in auto fabrication, supermarket racks, container fabrication and industrial plant structure, etc. ,
Original: Qingdao, Shandong, China
Ref No. : WX-901
Material: All the steel plate are purchased from the noted Chinese steel plant or based on the customer's specific requirements. Before we began to use the steel plate, these products have been checked by steel plant and our quality checker so as to assure the quality of the raw materials.
Production Standard: Our steel butt longitudinally-welded Pipes are produced with a range of tempers and guaranteed mechanical properties to comply with all major world standard such as china national standard (GB) or other country standards such as ASME/ANSI, API, MSS, DIN, JIS, SH, SY, HG, and DL. We also can produce all the goods according to the customers other requirements.
a) All Round pipes: 406mm or above (Inner Diameter)
b) Thickness 5 - 80mm
In addition to the above products specifications, we can make the special pipes based on the customers requirements.
we can produce every type of pipes based on the customers specification and other requirements.
1.1 The OD, wall thickness and length shall comply with Code API SPEC 5L. In case of pipe of other dimensions are required, the buyer and the seller shall make mutual agreement accordingly.
1.2 Except that the tolerance for OD and wall thickness shall comply with API SPEC 5L, GB709-88 Dimensions, shape, and weight for hot-rolled plates and strips shall also be binding. In case of pipe of higher precision is required, the buyer and the seller shall make mutual agreement accordingly.
2.1 The usual length used ranges6-12.2m. No more than 5 %( in weight) of short size pipe is allowed, and the short size shall be no less 1m.
2.2 Cut-length and double length
They are specified in the usual range, and for each cut length, there shall be 5mm extra. And the total tolerance is L0+15mm.
3.1 The tolerance for straightness and tortuosity factor shall not exceed 0.15% of the pipe length.
3.2 The ovality shall not exceed 5mm. And the difference of the average diameter between pipe ends shall not be more than 2mm.
3.3 The cutting section of two ends shall be perpendicular with the axis of the pipe, and free from blurs.
4 The transaction value is based on theoretical weight or actual weight. And the density for the steel is 7.85 ton/m3.
Visual quality: Defects like fissure, scar, overlap, layer, porosity, Flash are not allowed. Oxidization skin and traces of grinding are allowed.
Packing: Export standard bare bundles or as per customer's requests
Color: Silver white or Based on the customers requirements.
Fabrication: Based on the customer's requirements, local conditions, and other technical data agreed by both parties.
Terms of Payment: L/C, T/T
Minimum Order Quantity: 10tons
Port of Loading: Qingdao Port
Delivery time: one month or based on the customers requirements
1. We used CO2 welding and submerged arc auto welding or other methods.
2. Welded seam shall be full penetration and grinded.
3. The welded product has no fissure, scar, overlap, layer or other defects.
All components are dip-hot galvanized with uniform.
We also supply Factory accept test, Warranty certification, Certificate of product quality
Certification of Quality Management System
Our all products are in conformity with GB/T19001-2000idt ISO 9001:2000.