Welded Steel Pipe
Welded Steel Pipe Manufacturer and Supplier in Indonesia
Welded steel pipe is produced by forming steel strip into a cylinder and welding the longitudinal seam with high-frequency ERW (electric resistance welding), delivering cost-effective pipe for general service. Sino East Steel is a welded steel pipe manufacturer and supplier based in Tianjin, China, exporting to Indonesia and more than 50 countries for over 18 years. As a direct factory supplier with a 65,000 m2 production base and 500,000 tons of annual capacity, we deliver to Indonesian importers, distributors, contractors and project companies with complete documentation, including the Mill Test Certificate (MTC) per EN 10204 3.1 on every shipment.
Indonesian buyers choose our welded steel pipe because every batch is tested in our ISO 9001:2015 certified quality system, packed seaworthy and shipped to Tanjung Priok (Jakarta), Tanjung Perak (Surabaya), Belawan (Medan) and Makassar within 18-25 days after production. Third-party inspection by SGS, BV or TUV can be arranged at the factory or at the destination port, and SNI documentation support is available for regulated applications.
What Is Welded Steel Pipe?
ERW welded steel pipe is manufactured by roll forming steel strip and welding the seam with high-frequency induction, followed by sizing and straightening. It offers the strength and pressure rating required for most general service applications at a lower cost than seamless pipe, and is available black or hot-dip galvanized, plain or threaded ends. Standards include ASTM A53, A36 and EN 10219.
Indonesian contractors, plumbing suppliers, irrigation projects and scaffold manufacturers buy ERW welded pipe from Sino East Steel in sizes from 1/2 inch to 24 inches, with hydrostatic testing and complete MTC documentation on every shipment.
Standards, Grades and Specification Range
Our welded steel pipe is manufactured to internationally recognized standards and supplied in the sizes most frequently ordered by Indonesian importers and distributors:
| Item | Specification |
|---|---|
| Standards | ASTM A53, ASTM A36, EN 10219, BS 1387 |
| Grades | Grade A, Grade B, Q235, Q345 |
| Size range | 1/2 inch - 24 inch OD |
| Wall thickness | SCH10 - SCH80, and light gauge |
| Length | 6 m / 12 m, random or fixed |
| Finish | Black, or hot-dip galvanized |
| Ends | Plain, threaded with coupling, grooved |
| Testing | Hydrostatic, flattening, bend, eddy current |
| Certification | ISO 9001:2015, MTC per EN 10204 3.1 |
Seam Weld Integrity and Dimensional Control
The longitudinal weld seam is the critical zone of ERW pipe. Our production lines use online weld monitoring, and every pipe is hydrostatically tested and sampled for flattening and bend performance, with eddy current testing on request. Galvanized welded pipe is coated after welding, ensuring the zinc layer covers the seam and internal bore for complete corrosion protection in water and outdoor service.
Applications of Welded Steel Pipe in Indonesia
- Water supply - Municipal water mains and irrigation networks.
- Construction - Structural supports, bracing and columns in buildings and warehouses.
- Scaffolding - ERW tubes for frame and system scaffolding.
- Fencing and gates - Pipe fencing, gates and handrails.
- Machinery - Low-pressure lines, conduit and mechanical tubing.
Why Indonesian Buyers Buy Direct from Our Factory
When you source welded steel pipe from Sino East Steel, you buy from the manufacturer, not a trading company. That means the specification confirmed in the quotation is the specification delivered, at mill-direct pricing with complete quality accountability:
| Factor | Factory direct (Sino East Steel) | Trading company |
|---|---|---|
| Pricing | Mill-direct, no middleman markup | Multiple markups added |
| Quality control | In-house testing lab, heat number traceability | Relies on supplier documents |
| Documentation | MTC per EN 10204 3.1 on every batch | Documents often incomplete |
| Production control | Direct scheduling, 15-25 days lead time | Lead time dependent on third parties |
| Custom orders | Custom dimensions and specifications accepted | Limited to stocked items |
How to Order Welded Steel Pipe as an Indonesian Importer
- Send your required standard, grade, size, quantity and destination port to [email protected] or WhatsApp +86 186 2208 8833.
- Receive a formal quotation with FOB Tianjin or CIF pricing, delivery time and shipping options within 24 hours.
- Confirm the specification in writing; production starts after order confirmation and 30% deposit.
- Track your shipment with weekly progress updates and full export documentation, including MTC, commercial invoice, packing list and bill of lading.
Shipping and Logistics to Indonesian Ports
We ship on a monthly rolling schedule to the main Indonesian ports: Tanjung Priok (Jakarta), Tanjung Perak (Surabaya), Belawan (Medan) and Makassar, with regular consolidation for mixed-product container orders. Sea freight from Tianjin to Indonesian ports typically takes 18-25 days. Mixed sizes and mixed product lines can be consolidated in one container to reduce your total landed cost.
Frequently Asked Questions
What is the minimum order quantity?
MOQ is typically 5 metric tons per specification, and mixed-size container loads of 20 or 40 feet are welcomed for distributors and project stock orders.
What are the payment terms?
We accept T/T, L/C, D/A, D/P and O/A for long-term partners. Standard terms are 30% deposit and 70% against copy of shipping documents.
Do you provide Mill Test Certificates?
Yes, every batch ships with an MTC per EN 10204 3.1 including chemical composition and mechanical test results.
How long does delivery to Indonesia take?
Production takes 15-25 days after specification confirmation, followed by 18-25 days sea freight to Tanjung Priok, Tanjung Perak, Belawan or Makassar.
Can third-party inspection be arranged?
Yes, SGS, BV or TUV inspection can be arranged at the factory before loading or at the destination port, which is common for government and project supply in Indonesia.
When should I choose welded instead of seamless pipe?
Welded ERW pipe is cost-effective for general service, water, structural and low-to-medium pressure applications. Choose seamless for high pressure, high temperature and safety-critical service.
Can you supply threaded and coupled pipe?
Yes, we supply plain, threaded with coupling, and grooved ends for quick installation.
Request a Quote from the Welded Steel Pipe Manufacturer
Send your specification to [email protected] or message us on WhatsApp +86 186 2208 8833. We respond within 24 hours with pricing, lead time and shipping options to Indonesian ports.