spiral galvanized pipe Welded steel pipe refers to the steel pipe with joints on the surface which is welded after the steel belt or steel plate is bent and deformed into the shape of circle or square.The blank used for welded steel pipe is steel plate or strip.
SSAW (Spiral Submerged-arc Welded) Steel Pipe
Used for low pressure liquid delivery, such as water, gas, and oil.
API 5L PSL1/ PSL2 , ASTM A252, EN10219, AWWA C200, ASTM A53, BS, JIS, etc...
ASTM A 53
Gr. A, Gr B, Gr C, Gr.D
A, B, X42, X46, X52, X56, X60, X65 X70
L175, L210, L245, L290, L320, L360, L290, L320, L360, L390, L415, L450, L485, L555
Gr.1 Gr.2 Gr.3
S235JR, S275JR, S355JR, S355JOH, S355J2, S420...
219.1mm - 4064mm (8" - 160")
4 mm - 25.4mm
Up to 70m
The Spiral Galvanized Pipe corrosion resistance of t-welded steel tubes is strong in acidic environment when Ni is contained in them. In the environment containing sulfuric acid or hydrochloric acid, the higher the Ni content in t-welded steel tubes, the stronger the corrosion resistance.Under normal conditions, corrosion can be prevented by adding Cr to t-welded steel tubes.
The Spiral Galvanized Pipe bad condition of steel strip edge is another important reason for the wrong side.The influence of mass flow rate, heat flow density and structural parameters (the ratio of spiral curvature diameter to t-welded steel pipe diameter, Dc/D) on the saturation bubble boiling heat transfer coefficient in vertical spiral pipe.In the production of t-welded steel pipe,
the wrong side occurs from time to time.In the production practice, the steel pipe is often degraded by the error edge.Therefore, it is necessary to analyze the causes of the wrong side of spiral steel pipe and the preventive measures.Due to the poor shape and dimensional accuracy of uncut edge steel head and tail, it is easy to cause Spiral Galvanized Pipe hard bending of the steel belt during butt joint and cause wrong side.
Range of simulation parameters: vertical pipe: pipe diameter D=lOmm, pipe length L=660mm;There are three kinds of vertical t-welded steel tubes: diameter D=10mm, ratio of curvature diameter of t-welded steel tubes to spiral diameter changes are Dc/D= 15,20,25, spiral pitch Pt=20mm, pipe length L=503mm, L=660mm, L=817MM, respectively.Mass flow rate G=200~400Kg/(m'2·s), heat flux q=5~15KW/m'2, saturation pressure p, saturation = 0.414880mpa, saturation temperature T, saturation = 283.15k.
spiral galvanized pipe
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The Process Flow
Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.
has more than eighteen years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation.
We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel coiled pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.
Edit by Ms. Vicky of CSPG
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