Spiral Submerged Arc Welded Pipes

Spiral Submerged Arc Welded Pipes

Spiral Submerged Arc Welded pipe, is a low-carbon structural steel or low-alloy structural steel strip according to a certain degree of helix angle (called forming angle) into a tube blank, and then by pipe seam welded together, It can produce large diameter steel pipe with narrower strip. Spiral pipe is mainly used for oil and gas pipeline, the specification of the diameter, wall thickness. Spiral pipe with one-sided welding and double-sided welding, the pipe should ensure that the hydro static test, the tensile strength of the weld and the cold bend performance to comply with the provisions.

Send InquiryChat Now

Product Details

Brief Introduction

Spiral Submerged Arc Welded pipe, is a low-carbon structural steel or low-alloy structural steel strip according to a certain degree of helix angle (called forming angle) into a tube blank, and then by pipe seam welded together, It can produce large diameter steel pipe with narrower strip. Spiral pipe is mainly used for oil and gas pipeline, the specification of the diameter, wall thickness. Spiral pipe with one-sided welding and double-sided welding, the pipe should ensure that the hydro static test, the tensile strength of the weld and the cold bend performance to comply with the provisions.


SSAW STEEL PIPES.jpg


Welding technology

Double-sided submerged arc welding

Double-sided submerged-arc welded pipe using double-sided submerged arc welding technology, the narrow-band (plate) roll welded steel pipe. Steel forming process, the plate deformation, residual stress is small, the surface does not scratch. 

Processed steel pipe in the diameter and wall thickness of steel pipe size specifications range, greater flexibility, especially in the production of high steel grade thick-walled steel pipe, especially large diameter thick-walled pipe with other processes have unmatched advantages that meet Users in pipe specifications more requirements.

The use of pre-welding after welding (welding) process can be achieved in the best position of the welding, not prone to wrong side, welding partial penetration and imperfections and other defects, easy to control the quality of welding ; 


IMG_20171114_102631.jpg

Inspection result

Spiral steel pipe according to the quality inspection results, usually divided into three types of spiral steel pipe: qualified products, rework and waste products. 

Qualified product refers to the appearance of the quality and internal quality of the relevant standards or delivery acceptance of the technical conditions of the spiral steel; rework refers to the appearance of the quality and internal quality does not fully meet the standards and acceptance of the article, but allows rework, after rework to meet the standards and acceptance conditions Of the Spiral Pipe.

Waste refers to the appearance of quality and internal quality unqualified, does not allow repair or rework still can not reach the standard and acceptance conditions of the spiral steel pipe.

 

Edit by Mr. Bruce Zhang of KRM/BSW

Contact us directly by:

Email: bruce@kingruimansteelpipe.com

Tel / Whatsapp: +86-18046588367

Skype: brucezhang166


Inquiry