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Topsun Trading Co., Ltd. supplies steel pipe made from carbon steel that meets API 5L Grade B and ASTM A53 Grade B specifications. The product range covers nominal pipe sizes from 1/2 inch up to 48 inch. Wall thicknesses are selected to satisfy the schedule requirements of the referenced standards. Both seamless and electric‑resistance‑welded (ERW) variants are offered.
API 5L and ASTM A53 are widely adopted for oil‑field and construction projects, providing a proven balance of strength and ductility. Typical pressure‑class for Grade B carbon steel pipe is 150 psi at ambient temperature. Dimensional tolerances of ±0.25 mm are common for these size ranges. Standard end preparations such as plain socket or threaded connections can be supplied on request.
End users include oil‑and‑gas contractors, civil‑engineering firms, and manufacturers of industrial equipment. Topsun advertises flexible minimum order quantities and arranges bulk export via sea freight. Buyers are advised to request mill‑test reports and confirm incoterms before finalising the purchase.
| Material | Carbon Steel (API 5L Grade B / ASTM A53 Grade B) |
| Size Range | 1/2 inch to 48 inch (typical NPS range for carbon steel pipe) |
| Wall Thickness | Schedules conforming to API 5L and ASTM A53 (typical thickness per size) |
| Pipe Type | Seamless and ERW (standard manufacturing methods) |
| Standard Specification | API 5L, ASTM A53, ASTM A106 (standard industry specifications) |
| Pressure Rating | Up to 150 psi (typical for Grade B carbon steel pipe) |
| Dimensional Tolerance | ±0.25 mm (typical tolerance) |
| End Preparation | Plain socket or threaded ends available on request (typical options) |
| Coating | Uncoated carbon steel (standard unless specified otherwise) |
| Packaging | Bundled in wooden crates, 10‑12 pieces per crate (typical packaging) |
Topsun Trading Co., Ltd. is based in Bucheon, Gyeonggi‑Do, South Korea. The company is listed with a harbor trust tier on the platform, indicating a verified business registration. Its registered address is Royal Bldg, Bucheon 14753, Gyeonggi‑Do. The supplier’s response statistics show a response rate of 0 % and no recent response time recorded.
The firm specialises in supplying carbon‑steel pipe that conforms to API 5L, ASTM A53 and ASTM A106 grades. It offers both seamless and ERW pipe formats for bulk export and can arrange sea freight to international destinations. While pricing is not disclosed, Topsun notes that it can accommodate flexible minimum order quantities for large shipments.
We supply high-quality steel pipes in various grades including API 5L, ASTM A53, and ASTM A106 for oil and gas, construction, and industrial applications. Our seamless and ERW steel pipes are available in sizes from 1/2 inch to 48 inches, with wall thicknesses meeting international standards. As a reliable B2B supplier, we offer competitive pricing for bulk export orders with flexible MOQ and global shipping options.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | Contact Supplier |
| Response Rate | New Supplier |
Before placing an order with Topsun Trading Co., Ltd., importers should verify the company’s registration details using the address in Bucheon and confirm the harbor trust tier status on the platform. Request a copy of the latest business licence and a mill‑test certificate that lists the chemical composition and mechanical properties of the API 5L or ASTM A53 pipe you intend to purchase. Cross‑checking these documents reduces the risk of receiving non‑conforming material.
Topsun typically ships steel pipe by sea freight from the port of Busan, although the exact departure point should be confirmed with the supplier. Ask for the expected lead time for the required size and schedule, and clarify the incoterm - for example FOB Busan or CIF destination - that will apply to the transaction. Payment terms such as a letter of credit or advance payment can be negotiated once the shipping schedule is agreed.
Upon arrival, buyers should arrange an independent inspection to verify dimensions, wall thickness and pressure rating against the mill‑test report. Non‑destructive testing, such as ultrasonic wall‑thickness measurement, is standard practice for oil‑field pipe. Retain the certificate of conformity and shipping documents as part of the import record to satisfy customs and downstream quality requirements.
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When sourcing Steel Pipe for your business, securing the right balance of quality and cost is essential. Topsun Trading Co., Ltd., a verified supplier based in South Korea (Republic Of Korea), offers this product with key specifications including API 5L Gr.B, ASTM A53 Gr.A/B, Q235, Q345, S355, 21.3mm - 914.4mm (1/2" to 36"), and 2.0mm - 25.0mm (SCH20 to SCHXXS). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $600/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 7304.30, making it a staple in the Steel Pipes sector with strong demand from importing countries worldwide.
Importing Steel Pipe requires careful attention to shipping logistics, customs compliance, and secure payment terms. Topsun Trading Co., Ltd. offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 7304.30 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading B2B marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. The supplier of this Steel Pipe has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Steel Pipes category and connect with top-tier exporters on our comprehensive global B2B marketplace. Start your sourcing journey today.
Importing Steel Pipe requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 7304.30 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
The current listed wholesale price for Steel Pipe from Topsun Trading Co., Ltd. is $600/Bags on FOB terms from South Korea (Republic Of Korea). Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Topsun Trading Co., Ltd. through EximNext.
The supplier, Topsun Trading Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Steel Pipe. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
For international shipping and customs clearance, Steel Pipe is classified under HS Code 7304.30. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
To import Steel Pipe from South Korea (Republic Of Korea), negotiate shipping terms (FOB, CIF, or EXW) directly with Topsun Trading Co., Ltd.. Ensure you have the necessary import licenses for Steel Pipes products in your destination country.
Yes, Topsun Trading Co., Ltd. is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
The key specifications for Steel Pipe supplied by Topsun Trading Co., Ltd. include API 5L Gr.B, ASTM A53 Gr.A/B, Q235, Q345, S355, 21.3mm - 914.4mm (1/2" to 36"), and 2.0mm - 25.0mm (SCH20 to SCHXXS). For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
Topsun Trading Co., Ltd. offers Steel Pipe with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Steel Pipe is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Topsun Trading Co., Ltd. through our platform.
Topsun Trading Co., Ltd. maintains international quality certifications. These ensure that the Steel Pipe meets international quality, safety, and regulatory standards required for cross-border trade.
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Topsun Trading Co., Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Topsun Trading Co., Ltd..
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