Indonesian EPC Contractor Orders ASTM A106B Seamless Tube for Gas Transmission Station Piping
Δημοσιεύτηκε στις: October 20, 2026
Indonesian EPC Contractor Orders ASTM A106B Seamless Tube for Gas Transmission Station Piping
An engineering, procurement and construction contractor working on gas transmission facilities in Indonesia has placed a repeat order for ASTM A106 Grade B hot rolled seamless carbon steel tube. The material was destined for high-pressure piping inside a gas transmission and metering station, where elevated temperature service and strict weld quality requirements apply.
Client Background
The client delivers turnkey mechanical and piping packages for gas transmission stations, compressor stations and downstream processing facilities across Sumatra and Java. Its procurement team must satisfy owner specifications derived from ASME B31.3 process piping rules, which call for seamless carbon steel in high-pressure hydrocarbon and gas service.
The Challenge
- Piping had to withstand high pressure and elevated temperature in continuous gas service
- Owner specification required seamless ASTM A106 Grade B material with full traceability
- Mixed sizes from small bore to 20" were needed from a single supplier to simplify logistics
- Wall thickness had to match piping class schedules precisely to suit existing fittings and flanges
- Surface protection was critical for sea freight and humid coastal storage in Indonesia
- Documentation had to satisfy third-party inspection before shipment release
The Solution
We delivered hot rolled seamless tube to ASTM A106 Grade B in sizes from 1" to 20", with wall thickness scheduled to match the project's piping classes from SCH 40 through SCH 80 and heavier custom walls. Each heat number was linked to material test reports, and the full consignment was released with ISO and BV certification plus third-party inspection records.
Pipe ends were supplied either bevelled for shop prefabrication or plain for field fit-up, with marking applied per the client's line-number convention so that material could be issued directly to the spool fabrication bay. Black painting and anti-corrosion oil protected the tubes during sea freight and open storage at the coastal site, and painted caps sealed threaded connection points during transport.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product | ASTM A106B Hot Rolled Seamless Tube — station piping |
| Standard | ASTM A106 / A106M Grade B |
| Type / Shape | Seamless, round |
| Size Range | 1" – 24" (32 mm – 600 mm OD) |
| Wall Thickness | 2.5 mm – 75 mm, SCH and custom walls |
| Length | 2 m – 12 m, or as per customer's requirement |
| Service | High pressure, elevated temperature gas and hydrocarbon duty |
| Pipe End | Plain / bevelled / threaded with coupling and cap |
| Surface | Black painting, varnish or anti-corrosion oil |
| Inspection | Third-party inspection, MTR traceable by heat number |
| Certificate | ISO, BV |
| ODM / OEM | Available |
Results & Benefits
- Seamless A106B material met the ASME B31.3 based owner specification with no deviation request.
- Single-supplier coverage of 1" to 20" simplified procurement and consolidated vessel loading.
- Heat-number traceability and third-party records cleared inspection without hold points.
- Pre-marked pipes reduced material handling errors in the spool fabrication yard.
- Anti-corrosion protection survived sea freight and humid coastal storage intact.
- Repeat order placed for the next phase of station piping packages.
Conclusion
For EPC contractors building gas transmission and processing facilities, ASTM A106B hot rolled seamless tube offers the pressure integrity, temperature resistance and documentation discipline that owners demand. This Indonesian order demonstrates how consistent quality and complete certification support smooth inspection and predictable fabrication schedules.
