Recent Shipment Heat-exchanger Steel Tubes and Studded Tubes Overseas Project

We recently completed the shipment of a customized order of heat exchanger steel tubes and studded tubes for an overseas industrial project. Manufactured according to the customer's technical specifications, the products underwent comprehensive quality inspections before export to support reliable installation and long-term operation. Designed for a heat exchanger system upgrade in the petrochemical industry, this project order reflects the importance of precision manufacturing, documented quality control, and efficient export logistics. For EPC contractors and industrial plant operators, reliable export supply is not only about product quality—it also depends on accurate documentation, timely delivery, and compliance with project specifications.

Project Overview

Customized Order for an Overseas Client

This shipment was prepared for an overseas industrial customer involved in a heat exchanger system upgrade. The project required customized heat exchanger components manufactured to specified dimensions and material grades.

Project Information

Item	Details
Shipment Type	Customized Project Order
Products	Heat Exchanger Steel Tubes & Studded Tubes
Application	Petrochemical Heat Exchanger System
Supply Type	Export Supply
Inspection	Material Verification, Dimensional Inspection, NDT (where required)
Project Status	Project Completion & Overseas Shipment

Throughout production, raw materials, manufacturing processes, and dimensional tolerances were verified according to customer drawings and applicable technical requirements. Complete material certificates and inspection records accompanied the shipment to support product traceability and project documentation. Proper documentation is an important part of international deliveries. Material certificates, inspection reports, and traceability records help simplify customs clearance and support project acceptance upon arrival.

Products Delivered

Heat Exchanger Steel Tubes

Heat exchanger steel tubes are widely used in shell-and-tube heat exchangers, condensers, boilers, and other thermal equipment where efficient heat transfer and pressure resistance are essential.

Typical Specifications

Item	Specification
Outside Diameter	19–76 mm
Wall Thickness	2.0–8.0 mm
Length	Up to 12 m
Materials	ASTM A179, ASTM A192, ASTM A210, ASTM A213
Manufacturing	Seamless

These tubes were manufactured according to the customer's project requirements. Additional sizes, materials, and specifications can be supplied for different heat exchanger applications.

Studded Tubes

Studded tubes are manufactured by resistance welding steel studs onto the outer surface of the base tube. The studs increase external surface area and promote gas turbulence, improving heat transfer efficiency in high-temperature applications such as fired heaters, waste heat recovery units, and refinery process heaters.

Typical Specifications

Item	Specification
Tube Outside Diameter	25–114 mm
Tube Length	Up to 18 m
Stud Diameter	6–12 mm
Stud Height	10–25 mm
Stud Pitch	Customized
Materials	Carbon Steel, Alloy Steel, Stainless Steel

Depending on project requirements, studded tubes can be manufactured using different tube materials, stud dimensions, and welding configurations to match operating temperatures and process conditions.

Quality Inspection Before Shipment

Each shipment is inspected before export to verify compliance with customer specifications and applicable manufacturing standards. Typical inspection activities include:

• Raw material verification with full heat number traceability
• Dimensional inspection of tube diameter, wall thickness, and length
• Visual inspection of tube surfaces and stud welding quality
• Hydrostatic testing where required by project specifications
• Non-destructive testing (NDT) such as Ultrasonic Testing (UT), when specified
• Final packaging inspection before container loading

Comprehensive inspection helps minimize dimensional deviations, supports installation efficiency, and ensures complete quality documentation for international projects.

Export Packaging for Long-Distance Transportation

Proper packaging is essential for protecting heat exchanger components throughout international transportation. For this shipment, the following export measures were applied:

• Anti-rust protection on exposed steel surfaces
• Plastic end caps to protect tube ends
• Secure steel bundling for handling and transport
• Container loading designed to prevent movement during transit
• Complete shipping documentation, including packing lists, inspection reports, and commercial invoices

Careful packaging helps ensure that products arrive at the project site in suitable condition for fabrication and installation.

FAQ

Q1: What products were included in this shipment?
A1: The shipment included customized heat exchanger steel tubes and studded tubes manufactured according to project specifications.
Q2: Can product dimensions be customized?
A2: Yes. Tube diameter, wall thickness, length, stud spacing, materials, and other specifications can be customized to meet individual project requirements.
Q3: How is product quality verified before export?
A3: Each shipment undergoes material verification, dimensional inspection, visual examination, and additional testing where required. Inspection reports and material certificates are provided to support traceability and project documentation.
Q4: Which industries commonly use these products?
A4: Heat exchanger steel tubes and studded tubes are widely used in petrochemical processing, power generation, waste heat recovery, industrial boilers, refineries, and other thermal process industries.

Conclusion

This recent shipment demonstrates how customized manufacturing, comprehensive quality inspection, and efficient export logistics work together to support international heat exchanger projects. Following project completion and final inspection, the order was prepared for overseas delivery according to the agreed schedule. For industrial customers seeking dependable bulk delivery, project orders, and long-term export supply, consistent manufacturing quality and complete documentation remain essential throughout every stage of the supply process. Hunan Great Steel Pipe Co., Ltd. manufactures heat exchanger steel tubes, studded tubes, and other customized heat exchanger components for industrial projects worldwide. Our production capabilities include material selection, precision fabrication, quality inspection, and export support in accordance with customer specifications and international standards. With experience serving EPC contractors, fabricators, and industrial end users, we provide reliable solutions for demanding heat exchanger applications.