The Direct Answer: CC Refers to a Specific Plate Family In ASTM A671/A671M, the CC prefix identifies a family of electric-fusion-welded pipe grades made from plain carbon, killed, fine-grain pressure-vessel-quality steel plate specified by ASTM A516/A516M. The suffix number identifies the corresponding ASTM A516 plate grade: CC60 uses Grade 60 plate, CC65 uses Grade 65 plate, and CC70 uses Grade 70 plate. The complete ASTM A671 designation also needs a separate pipe Class, such as CC65 Class 22. CC65 is…

What EFW Steel Pipe Means Electric-fusion-welded (EFW) steel pipe is produced from steel plate formed into a cylindrical shape and joined by a fusion-welded longitudinal seam. The exact production and inspection requirements depend on the ordered product specification. EFW describes a manufacturing category; it is not a material grade, pressure rating or guarantee of performance. EFW should be distinguished from electric-resistance-welded (ERW) pipe, in which the longitudinal edges are joined by resistance heating. Longitudinal submerged arc welding (LSAW) describes a…

API 5L X80 (L555) is a high-strength line-pipe grade with a specified minimum yield strength of approximately 555 MPa (80 ksi). Its strength can be useful in high-pressure transmission design, but a strength designation does not establish resistance to hydrogen sulfide (H₂S)-related cracking. X80 should not be described as routinely qualified for sour service under API 5L Annex H. API documentation identifies grades B through X70 in Annex H Table H.1; X80 is not among those listed grades. Consequently, specifying…

Galvanized steel pipe can be threaded when its product specification, wall thickness and intended service permit a threaded connection. Correct threading requires more than a sharp die: the pipe must be cut square, reamed, aligned, lubricated, gauged and assembled with compatible fittings. Because threading removes part of the zinc coating, exposed areas also need appropriate corrosion protection. This guide explains a practical process for manual and powered threading while distinguishing common NPT and BSP thread systems. Can Galvanized Steel Pipe…

Galvanized steel pipes can remain serviceable for decades, but there is no universal lifespan. A frequently quoted broad range is around 20–50 years in some outdoor or utility applications, while favorable, relatively dry environments may allow substantially longer service. Aggressive water, coastal exposure, buried conditions or damaged zinc can shorten life considerably. These figures are indicative, not guaranteed design lives. The most reliable estimate starts with coating specification, exposure conditions and inspection history. What Is Galvanized Steel Pipe? Galvanizing applies…

Fusion-bonded epoxy (FBE) coated steel pipe is used in water transmission projects where corrosion resistance, coating adhesion and controlled installation quality are essential. FBE is a thermosetting epoxy powder applied to a prepared, heated steel surface. It forms a protective coating after melting, flowing and curing. For water infrastructure, the key purchasing decision is whether the coating is intended for the pipe exterior, the water-contact interior, or both. Each surface has different service conditions and may require different approvals. What…

What Is FBE Coated Steel Pipe? Fusion-bonded epoxy (FBE) is a thermosetting powder coating applied to a prepared, heated steel surface to form a bonded corrosion-protection layer. For oil and gas transmission, the base pipe may be specified to API 5L, with its grade, diameter, wall thickness and testing determined independently from the coating system. FBE is not a substitute for pipe wall thickness or pressure design. It provides a protective barrier against external electrolytes and is commonly integrated with…

Understanding ASTM A671 CC60 Class 22 ASTM A671/A671M covers electric-fusion-welded steel pipe made from pressure-vessel-quality plate for atmospheric and lower-temperature service. The CC60 grade identifies the specified plate material, while Class 22 identifies a particular combination of manufacturing, heat-treatment and examination requirements. These designations should be checked separately against the edition stated in the purchase order. Compliance with the product specification does not establish a completed piping system’s design pressure. That determination belongs to the applicable design code, such as…

ASTM A671 CC60 Class 22 electric fusion welded (EFW) steel pipe is manufactured from pressure-vessel-quality plate for applications within the scope of ASTM A671. Production involves plate verification, forming, qualified fusion welding, class-specific treatment, testing and final traceability checks. Understanding each stage helps purchasers evaluate whether a pipe meets the ordered grade, class and project requirements. Compliance with the product specification is essential, but it does not replace a piping-system design assessment. Material Selection and ASTM A671 Requirements Understanding CC60…

Electric fusion welded (EFW) and electric resistance welded (ERW) pipes are both produced with longitudinal welds, but their joining processes, typical starting materials and production economics differ. EFW pipe made from pressure-vessel-quality plate under specifications such as ASTM A671 may be well suited to project-specific dimensions and defined heat-treatment or radiographic examination requirements. ERW pipe can offer efficient production and competitive pricing for standardized sizes. Selection should begin with the governing product specification and service conditions, not an assumption that…

Carbon steel line pipe is widely specified for oil, gas, water and slurry transmission because it combines mechanical strength, established manufacturing routes and broad availability. Its suitability, however, depends on the transported medium, operating conditions, corrosion-control strategy and applicable design code. Comparing it with stainless steel, ductile iron, polymers and alloy steel helps project teams select materials on engineering merit rather than initial price alone. Why Carbon Steel Line Pipe Is Widely Used Strength and API 5L grade selection API…

How LSAW Pipe Is Manufactured Longitudinal submerged arc welded (LSAW) pipe is formed from steel plate and joined along a longitudinal seam using submerged arc welding. Common plate-forming routes include JCO and UO methods, sometimes followed by controlled mechanical expansion. The selected forming and welding procedures are qualified to meet the applicable product and project specifications. Submerged arc welding uses an electric arc beneath a granular flux layer and normally deposits filler metal. Welding may be performed from the inside…

Why Offshore Projects Often Specify PSL2 Offshore pipelines may experience substantial external hydrostatic pressure, installation bending, low operating temperatures, cyclic loads and demanding inspection conditions. API 5L Product Specification Level 2 (PSL2) provides more tightly controlled material and manufacturing requirements than PSL1 in several important areas. This is why many offshore pipeline specifications call for PSL2. However, offshore location alone does not create a universal rule that every pipe must be PSL2. The governing pipeline design standard, regulatory requirements, operator…

Understanding Electric Fusion Welded Steel Pipe Electric fusion welded (EFW) steel pipe is manufactured by forming steel plate into a cylindrical shell and joining its edges by a fusion-welding process that uses electrical energy to produce the heat required for welding. Depending on the applicable product specification and approved procedure, filler metal may be deposited in the longitudinal weld. EFW is a manufacturing description, not a single material grade or a guarantee of suitability for every pressure system. It should…