Haihao Group has completed a shipment of API 5L X65 pipe to an Indonesian customer, covering four seamless pipe sizes for a demanding pipeline application. The order includes 16-inch and 12-inch pipes in Schedule 40, together with 4-inch and 2-inch pipes in Schedule 160. All pipes are supplied in 6-meter lengths and are specified to ASME B36.10.

The order also specifies NACE MR0175 requirements, making material selection and production control particularly important for the intended service environment.

Order Details

The combination of large-diameter Schedule 40 pipe and smaller, heavy-wall Schedule 160 pipe reflects the practical requirements of a piping system where different line sections can have different pressure and mechanical design conditions.

API 5L X65 SCH 40 and SCH 160 seamless pipes shipment to Indonesia

API 5L X65 Pipe for a Demanding Pipeline Specification

The main material in this shipment is API 5L X65 pipe, a high-strength line pipe grade commonly selected for demanding oil and gas pipeline systems. X65 belongs to the API 5L family of line pipe grades and is used where higher strength is required compared with lower-grade line pipe materials.

For this Indonesian order, the pipe sizes range from 2 inches to 16 inches. The 16-inch and 12-inch pipes are supplied in SCH 40, while the 4-inch and 2-inch sizes are SCH 160. This gives the customer a combination of flow capacity and heavier wall construction according to the requirements of different sections of the pipeline.

Rather than using one wall thickness across the entire order, the specification matches pipe dimensions to the application. This is particularly useful for projects where larger process lines and smaller high-pressure branches or connecting sections have different engineering requirements.

NACE MR0175 Requirement and Material Control

Another important point in this shipment is the stated NACE MR0175 requirement.

NACE MR0175/ISO 15156 provides material selection and qualification requirements for oil and gas production equipment exposed to H₂S-containing environments. API 5L seamless grades extending to X65 are commonly associated with NACE service specifications, subject to the applicable material and service requirements.

For a project requiring API 5L X65 pipe for sour-service conditions, simply selecting the X65 grade is not enough. The purchase specification, material condition, chemical and mechanical requirements, hardness control, testing requirements and applicable NACE provisions need to be reviewed together.

This is where detailed order review becomes important. Haihao Group works from the customer’s technical specification rather than treating the material grade as an isolated requirement.

Seamless Construction for Different Pipe Sizes

All pipes in this shipment are seamless steel pipes. The seamless construction is particularly relevant when customers require heavy wall thicknesses or specific pressure-service characteristics.

The 4-inch and 2-inch SCH 160 pipes have substantially heavier wall construction than the larger SCH 40 pipes. This makes them suitable for sections where the project design calls for increased wall thickness.

For the larger 16-inch and 12-inch lines, SCH 40 provides a different balance between pipe diameter, wall thickness, weight and flow area.

The order therefore demonstrates Haihao Group’s ability to supply API 5L X65 pipe across different nominal sizes and schedules within one project, while maintaining a consistent material and documentation basis.

ASME B36.10 Dimensions and Project Compatibility

The dimensional reference specified for this order is ASME B36.10. The standard covers welded and seamless wrought steel pipe dimensions and provides commonly used nominal pipe sizes and wall thickness designations.

For international pipeline procurement, using a recognized dimensional standard helps ensure that the supplied pipe can be coordinated with fittings, flanges, valves and other piping components specified under the project design.

For this shipment, the customer specified:

• 16″ SCH 40
• 12″ SCH 40
• 4″ SCH 160
• 2″ SCH 160
• 6-meter pipe length per piece
• API 5L X65 material
• ASME B36.10 dimensional specification
• NACE MR0175 requirement

Keeping these requirements clearly connected throughout production and inspection helps reduce dimensional and material mismatches during project installation.

Haihao Group supplies steel pipes and pipeline components for international projects, with experience in handling customized sizes, materials, standards and inspection requirements. For customers working on oil and gas, petrochemical, energy or industrial pipeline projects, the company can review drawings and technical specifications before quotation.

If your project requires API 5L X65 seamless pipe in SCH 40, SCH 160 or other wall thicknesses, send Haihao Group your size list, technical specification and applicable NACE requirements. Our engineering and sales team can review the details and provide a suitable quotation for your project.