Categories | Wear Resistant Pipes |
---|---|
Brand Name: | zexu |
Model Number: | 1"-80" |
Certification: | CE API ISO9001 |
Place of Origin: | Hebei china |
MOQ: | 1T |
Price: | 20-27000USD |
Payment Terms: | T/T |
Supply Ability: | 586700ton/Year |
Delivery Time: | 5work days |
Packaging Details: | Export wooden box |
Name: | Butt welded steel pipe |
standard: | ASME B36.19 |
Shape: | Round Shape |
Material: | A106 |
Color: | Black,Red,Gray |
Wall thickness: | SCH20-SCH XXS |
Processing Service: | Welding, Cutting |
size: | 1"-80" |
ASTM A106 Large Diameter Welded Steel Pipe High Pressure Oil And Gas Transportation
Welded steel pipes refer to steel pipes with seams on the surface that are welded after bending and deforming steel strips or steel plates into round or square shapes. The blanks used for welded steel pipes are steel plates or strip steels.
T-welded steel pipes have strong corrosion resistance in acidic
environments when they contain Ni. In environments containing
sulfuric acid or hydrochloric acid, the higher the Ni content in
T-welded steel pipes, the stronger the corrosion resistance. Under
normal circumstances, only adding Cr to T-welded steel pipes can
prevent corrosion. The poor condition of the edge of the steel
strip is another important reason for the wrong edge. The influence
of changes in mass flow, heat flow density and structural
parameters (the ratio of spiral curvature diameter to T-welded
steel pipe diameter Dc/D) on the heat transfer coefficient of
saturated bubbly boiling in a vertical spiral tube.
In the production of T-welded steel pipes, the wrong side occurs
from time to time, and there are many influencing factors. In
production practice, steel pipes are often degraded due to dry
misalignment and excessive tolerance. Therefore, it is necessary to
analyze the causes of wrong edges of spiral steel pipes and
preventive measures.
Due to the poor shape and dimensional accuracy of the head and tail of the untrimmed steel strip, it is easy to cause the steel strip to bend hard and cause misalignment during butt joints. Simulation parameter range: vertical pipe: pipe diameter D=lOmm, pipe length L=660mm; three types of vertical T-welded steel pipes: pipe diameter D=10mm, the ratio of the curvature diameter of the T-welded steel pipe to the spiral pipe diameter changes as Dc /D=15, 20, 25, spiral pitch Pt=20mm, tube length L=503mm, L=660mm, L=817MM. Mass flow 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.
Classification of welding methods
According to different welding methods, it can be divided into arc
welded pipe, high frequency or low frequency resistance welded
pipe, gas welded pipe, furnace welded pipe, Bondi pipe, etc.
Electric welded steel pipe: used in oil drilling and machinery
manufacturing.
Furnace welded pipe: can be used as water gas pipe, etc.,
large-diameter longitudinally welded pipe is used for high-pressure
oil and gas transportation, etc.; spiral welded pipe is used for
oil and gas transportation, pipe piles, bridge piers, etc.
Product name | Spiral welded steel pipe |
Length | 5.0 ~ 12.0 m or upon customers' requirements |
Standard | GB/T 9711, ASTM A53, API 5L, |
Grade | SS400, Q235, Q345, Q460, A572 Gr.50, A572 Gr.60, S235, S275, S355, Grade A/B, X42, X52, |
Surface | Prime quality (bared, oiled, color paint, 3PE, or other anti-corrosive treatment) |
Inspection | With Chemical Composition and Mechanical Properties Analysis; |
Dimensional and Visual Inspection, also with Nondestructive Inspection. | |
Application | structure, electric power transmission tower projects, piling, water, oil & gas pipeline |
engineering, mechanical industry, municipal projects, roads and its auxiliary facilities, etc. | |
Packing | Standard export, in bulk / bundles / nylon fabric bags with seaworthy packing; |
or according to customers' requestments. | |
Delivery Time | 1. 15-25 days after received deposit or confirmed L/C |
2. Depends on your oder quantity | |
Payment Terms | 1. T/T: 30% T/T advance, 70% balance copy of B/L |
2. L/C: at sight | |
3. T/T and L/C: 30% T/T advance, 70% L/C | |
Port | Tianjin China |