API SPEC 5CT EFW Pipe
Steel pipe electrofusion welding (EFW) refers to a type of electron beam welding that uses the kinetic energy of the high-speed moving electron beam's directional impact to convert into heat energy, causing the workpiece to leave the melt and form a weld.
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Resistance welding (ERW) refers to a type of welding process such as spot welding and seam welding. During the welding process, heat is generated through the resistance of the material, coupled with the time and force required to hold the materials together, causing the welding surface to aggregate.
Dimension:OD: 114.3-508mm WT: 5.21-16.13mm
Grade:Casing：JSS, KSS, N80-1,N80-Q, L80-1, L80-9Cr,L80-13Cr,C95, P110,Q125.
Thread types:STC,LTC,BTC etc
Standards and Technical Conditions for Supply:API Spec 5CT – Specification 5CT/ISO 11960, Specification for Casing and Tubing, Eighth Edition, Petroleum and natural gas industries-Steel pipes for use as casing or tubing for wells
Casings are used for fixing the well wall or down hole, which have wider diameters, can he divided into conductor casings, technical casings and Oil casings.
Welded pipes specification and size
API SPEC 5CT
| Product Name | Executive Standard | Dimension (mm) | Steel Code / Steel Grade |
| Casting | API 5CT | Ø48.3~273 x WT2.77~11.43 | J55, K55, N80, L80 |
| Tubing | API 5CT | Ø48.3~273 x WT2.77~11.43 | J55, K55, N80, L80, H40 |
API SPEC 5L
| Product Name | Executive Standard | Dimension (mm) | Steel Code / Steel Grade |
| Line Pipes | API 5L | Ø60.3~273.1 x WT2.77~12.7 | A25, A, B, X42, X46, X52, X56, X60, X65, X70, X80 |
ASTM / ASME
| Product Name | Executive Standard | Dimension (mm) | Steel Code / Steel Grade |
| Electric-Resistance-Welded Steel Pipes | ASTM A135 | Ø42.2~114.3 x WT2.11~2.63 | A |
| Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes | ASTM A178 | 42.2-114.3 x 2.11-2.63 | A, C, D |
| ERW and Hot-dip Galvanized Steel Pipes | ASTM A53 | Ø21.3~273 x WT2.11~12.7 | A, B |
| Pipes for Piling Usage | ASTM A252 | Ø219.1~508 x WT3.6~12.7 | Gr.2, Gr.3 |
| Tubes for General Structural Purpose | ASTM A500 | Ø21.3~273 x WT2.11~12.7 | Gr.2, Gr.3 |
| Square Pipes for General Structural Purpose | ASTM A500 | 25 x 25~160 x 160 x WT1.2~8.0 | Carbon Steel |
GNEE API Welded Pipe
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