Haihao Group has recently finalized the production and quality verification for a dedicated order of high-yield steel pipes and heavy-wall forged components bound for an industrial pipeline project in Indonesia. Designed to withstand demanding pressure ratings and strict line-pipe alignment tolerances, this shipment highlights our full-spectrum manufacturing capability—from precision machining to customized surface coatings.
Technical Specifications & Order Breakdown
To meet the client’s operational requirements, the order was split into high-yield seamless line pipes and high-strength forged pipe spools, produced under rigorous QA/QC protocols:
Seamless Steel Pipes: 8″ (DN200) | SCH20 (6.35 mm) & SCH80 (12.70 mm) | Length: 250 mm | ASTM A860 WPHY65 pipe material | Black Paint finish
Forged Pipe Spools: 8″ (DN200) | SCH20 (6.35 mm) & SCH80 (12.70 mm) | Length: 250 mm | ASTM A694 Gr. F65 material | Anti-rust Oiled finish
End Preparation: All items machined with 1 end plain, 1 end 30 degree bevel.
ASTM A860 WPHY65 pipe and ASTM A694 F65 forged pipe with custom 30 degree bevel ends for Indonesian project
Precision Machining: Custom Bevel & Plain End Configuration
A key engineering detail for this Indonesian order was the asymmetrical end preparation. Each 250 mm segment was precisely machined with one plain square-cut end and one 30-degree bevel end. This design allows seamless integration into existing field header assemblies while ensuring optimal weld root penetration during automatic or manual field welding.
Whether processing an 8 inch SCH80 steel pipe or thin-wall SCH20 segments, maintaining dimensional stability during short-length cutting and end-facing requires rigid clamping and calibrated tooling to eliminate ovality deformation.
Material Integrity: ASTM A860 WPHY65 vs. ASTM A694 F65
Selecting the proper material grade is essential when balancing yield strength and weldability in high-pressure oil and gas infrastructure:
ASTM A860 WPHY65 Pipe: Offers high yield strength (minimum 65,000 psi / 450 MPa) designed to match high-strength line pipes. The chemical composition is controlled to maintain a low carbon equivalent (CE), ensuring superior resistance to hydrogen-induced cracking (HIC). Every ASTM A860 WPHY65 pipe supplied by Haihao Group undergoes non-destructive testing (NDT) to verify structural integrity.
ASTM A694 Gr. F65 Forged Pipe: The forging process refines the microstructural grain size, offering elevated impact toughness at lower ambient temperatures. The clear anti-rust oil treatment prevents surface oxidation during sea freight across humid Southeast Asian transit routes.
As a trusted custom length forged pipe supplier, Haihao Group integrates pipe manufacturing, specialized forging, CNC end machining, and surface protection into a single quality-assured workflow.
Surface Treatment & Export Packaging
Before container dispatch, the seamless line pipes received a durable black paint coating, while the forged components were thoroughly coated with anti-rust oil as requested. Customized end protectors were fitted onto every segment to protect the high yield pipe bevel end 30 degree geometry from transport impact.
Looking for a certified partner for your next pipeline project in Southeast Asia or worldwide? Contact the Haihao Group engineering sales team to request a custom quotation today.
