Steel & Metal Product Catalog | Xin Wugang Steel

Project Overview

An onshore oil and gas field development project in eastern Saudi Arabia involved the construction of 18 new production wells in a reservoir environment containing moderate levels of hydrogen sulfide (H₂S).Due to the presence of sour oil and gas, the project required carefully specified oil country tubular goods (OCTG), corrosion-resistant materials, and reliable connection performance to support long-term well integrity and operational safety.
The project owner adopted API Specification 5CT and NACE MR0175 sour service requirements, with third-party inspectors supervising the material manufacturing and inspection process.
The procurement scope covered well casing, production tubing, drill pipes, surface gathering pipelines, and pressure vessel steel plates.
The material package included L80 13Cr casing, L80 tubing with premium VAM connections, API 5DP G105 drill pipes, API 5L X60 spiral welded pipes with three-layer polyethylene (3PE) external coating, and SA516 Gr70 pressure vessel steel plates.
The project required coordinated delivery, complete material traceability, ultrasonic testing documentation, and connection dimensional verification to support well construction and subsequent production operations.

Project Requirements

Oil and gas wells containing H₂S present demanding material selection and quality assurance requirements, particularly where equipment may be exposed to sour production fluids.
The project’s main procurement and technical requirements included:

•  API 5CT Compliance: Casing and production tubing manufactured to the specified API requirements.
• Sour Service Material Requirements: Materials selected and verified against the applicable NACE MR0175 requirements for the project’s operating environment.
•  Reliable Thread Connections: BTC, LTC, and premium VAM connections meeting customer-specified dimensional and inspection criteria.
• Drilling Equipment Support: API 5DP G105 drill pipes supplied for well construction operations.
•  Surface Pipeline Protection: API 5L X60 SSAW steel pipes with external 3PE anti-corrosion coating for gathering pipeline applications.
• Quality Documentation: API-related certification, mill test certificates (MTC), ultrasonic testing reports, and third-party inspection documentation.

The supplier was required to coordinate multiple material categories while maintaining consistent documentation and traceability throughout the procurement process.

Steel Material Supply Details

Material	Specification	Grade / Standard	Quantity
Oil Well Casing	9-5/8″ (244.48 mm) × 8.94 mm, BTC thread, R3	L80 13Cr / API 5CT	216 pcs / 162 Tons
Oil Well Casing	7″ (177.8 mm) × 8.05 mm, LTC thread, R3	L80 13Cr / API 5CT	194 pcs / 108 Tons
Production Tubing	3-1/2″ (88.9 mm) × 6.45 mm, VAM premium connection, R3	L80 / API 5CT	326 pcs / 94 Tons
Drill Pipe	5″ (127 mm) × 9.19 mm, R3	G105 / API 5DP	120 pcs / 68 Tons
SSAW Spiral Welded Steel Pipe	OD 610 × 10 mm, 12 m fixed length, external 3PE coating	X60 / API 5L	218 Tons
Pressure Vessel Steel Plate	12 × 1800 × 12000 mm	SA516 Gr70 / ASME SA516	76 Tons

Project Solution

1. API 5CT L80 13Cr Casing for Sour Oil & Gas Wells
Well casing is a critical component of oil and gas well construction, helping maintain wellbore integrity and supporting safe drilling and production operations.
For this Saudi Arabian onshore development project, two sizes of API 5CT L80 13Cr casing were supplied:

•  9-5/8″ casing, 8.94 mm wall thickness, BTC connection, totaling 216 pieces and 162 tons.
•  7″ casing, 8.05 mm wall thickness, LTC connection, totaling 194 pieces and 108 tons.

Both casing products were supplied in R3 lengths according to the project specifications.
The L80 13Cr material grade was selected as part of the customer’s corrosion-resistant tubular material requirements for the specified well conditions.
Particular attention was given to material documentation, ultrasonic inspection, and thread dimensional accuracy.
The supplied casing passed the customer’s connection inspections and was successfully run into the wellbores.

2. L80 Production Tubing with Premium VAM Connections
Production tubing provides the flow path for produced fluids from the reservoir to the surface.
The project required 326 pieces of 3-1/2″ L80 production tubing, with a wall thickness of 6.45 mm and a total supply quantity of 94 tons.
The tubing was specified with VAM premium threaded connections and supplied in R3 lengths.
Thread accuracy and connection quality were key acceptance requirements for the project.
The supplied tubing connections passed the owner’s inspection procedures, supporting successful installation and the subsequent operation of the production wells.

3. API 5DP G105 Drill Pipes for Well Construction
To support drilling operations, the project included 120 pieces of API 5DP G105 drill pipes, totaling 68 tons.
The drill pipes were supplied in the following specification:

•  Outside diameter: 5″ (127 mm)
•  Wall thickness: 9.19 mm
• Steel grade: G105
•  Length range: R3
•  Standard: API 5DP

G105 drill pipe was specified for the drilling operations associated with the new production wells.
The material supply was coordinated with the casing and tubing procurement package to support the project’s well construction schedule.

4. API 5L X60 SSAW Pipes with 3PE Coating
In addition to downhole tubular goods, the project required steel pipes for the surface oil and gas gathering network.
A total of 218 tons of API 5L X60 spiral submerged arc welded (SSAW) steel pipes were supplied.
The pipe specification included an outside diameter of 610 mm, wall thickness of 10 mm, and fixed length of 12 meters.
The pipes were supplied with an external three-layer polyethylene (3PE) anti-corrosion coating.
This external protective coating system was intended to reduce corrosion exposure on the outside surfaces of the gathering pipelines.
The pipe material and external coating formed part of the customer’s overall pipeline material and corrosion protection requirements.

5. SA516 Gr70 Pressure Vessel Steel Plates
The project also included 76 tons of SA516 Gr70 pressure vessel steel plates, supplied in 12 × 1800 × 12000 mm dimensions.
These plates were procured as part of the supporting surface facility material package.
SA516 Gr70 is commonly used in the manufacture of welded pressure-containing equipment due to its specified mechanical properties and suitability for pressure vessel fabrication.
The material was supplied according to ASME SA516 requirements, with relevant quality documentation included in the project supply package.

6. Third-Party Inspection and Material Traceability
The project owner required third-party manufacturing supervision and comprehensive quality documentation.
The inspection and documentation scope included:

•  API certification documentation
•  Original mill test certificates (MTC)
•  Ultrasonic testing (UT) reports
•  Connection dimensional inspection
•  Verification against the project-specific sour service material requirements
•  Third-party manufacturing inspection and acceptance

The quality assurance process helped support material verification before installation and ensured that the supplied products met the customer’s documented acceptance requirements.

Project Results

The supplied OCTG and steel materials met the project’s documented inspection and acceptance requirements, supporting the successful installation of the oil well tubular systems.

API Material Certification and Inspection
All supplied tubular products were accompanied by API-related certification documents, ultrasonic testing reports, and original mill test certificates.
Material inspections and third-party supervision supported verification against the owner’s specified quality and sour service requirements.

Thread Connection Accuracy
The BTC, LTC, and VAM threaded connections passed the customer’s dimensional inspection requirements.
The casing and production tubing were successfully run into the wellbores, demonstrating satisfactory connection quality during installation.

Sour Service Material Compliance
The supplied materials were accepted against the project’s specified NACE sour service requirements, supporting the customer’s long-term corrosion management and well integrity objectives.

Coordinated Material Supply
The integrated procurement package covered downhole tubular goods, drilling materials, surface gathering pipelines, and pressure vessel plates.
This consolidated supply arrangement supported material coordination for the 18-well development project.

Project Value Delivered

The project demonstrated our ability to coordinate steel pipe and pressure vessel material procurement for demanding oil and gas development applications.

•  API-Compliant OCTG Supply: L80 13Cr casing and L80 production tubing supplied according to API 5CT requirements.
•  Sour Service Quality Control: Material verification and documentation aligned with the project-specific NACE requirements.
•  Reliable Premium Connections: Thread dimensional inspections supported successful casing and tubing installation.
•  Integrated Drilling Material Supply: API 5DP G105 drill pipes delivered as part of the project procurement package.
•  Pipeline Corrosion Protection: API 5L X60 SSAW pipes supplied with external 3PE coating.
•  Third-Party Inspection Support: Complete material certificates and UT inspection reports facilitated the customer’s quality acceptance process.

OCTG & Steel Pipe Solutions for Oil and Gas Projects

We provide project-based steel material supply solutions for oil and gas exploration, drilling, production, and surface processing facilities.
Our supply capabilities include:

• API 5CT casing and production tubing
• L80, N80, P110, and corrosion-resistant OCTG grades
•  API 5DP drill pipes
•  Premium threaded OCTG connections
•  API 5L line pipes
•  SSAW, LSAW, and seamless steel pipes
•  3PE anti-corrosion coated pipelines
•  Pressure vessel steel plates
•  Mill certificates, inspection reports, and third-party quality documentation

We support EPC contractors, oilfield equipment manufacturers, drilling contractors, and energy project operators with coordinated steel material sourcing and project supply services.

Looking for a Reliable OCTG & Oilfield Steel Supplier?

Contact our team to discuss API 5CT casing, premium production tubing, API 5L line pipes, and customized steel supply solutions for your next oil and gas development project.