About HQ Pipeline Co., Ltd. - Stainless Steel Pipes & Pipe Fittings Supplier in China

Based in China, HQ Pipeline Co., Ltd. lists 17 active products across a range of pipe and fitting categories. The catalogue includes stainless steel pipes and pipe fittings, flanges, industrial couplings, steel pipes, metal products, industrial valves and gauges, and stainless steel flanges. Products such as seamless steel pipes (HS 7304.19) made from carbon steel grades ASTM A106-B / A53-B, forged fittings (HS 7307.99) in carbon steel ASTM A105 and stainless steel 304/316 (ASTM A182), and high‑pressure forged steel pipe fittings (HS 7307.29) of stainless steel 316L (ASTM A182 F316L) are enumerated. The list also contains grooved fittings, ductile iron grooved fitting, casting iron valve, pipe grooving machine (HS 8461.90), hangers and supports (HS 7308.90), and butt‑welded pipe fittings (HS 7307.23).

The material specifications cited in the catalogue reference common industry grades: carbon‑steel pipe sections are described with grades 10#, 20#, 45#, 16Mn, St37 and St20#, while stainless‑steel components use grades 304/304L and 316/316L. Additional items such as pipe cutting machines, hole cutting machines, and steel pipe nipples and couplings are listed without HS codes but fall under typical machine‑tool classifications. The product set therefore covers both raw pipe material and auxiliary equipment for pipe installation and maintenance.

Product Range and Specialties of HQ Pipeline Co., Ltd.

HQ Pipeline’s catalogue spans pipe‑related hardware and supporting machinery. Items include seamless steel pipes (carbon steel, ASTM A106‑B / A53‑B), forged fittings (carbon steel ASTM A105, stainless steel 304/316 per ASTM A182), high‑pressure forged fittings (stainless steel 316L, ASTM A182 F316L), forged flanges (stainless steel 304/304L, 316/316L), butt‑welded fittings (stainless steel 304/304L and 316/316L), and a variety of couplings, nipples, and grooved components. The list also features pipe grooving machines, pipe cutting machines, hole cutting machines, and hangers/supports made from alloy‑steel rollers or galvanized carbon steel. In the broader industry, stainless‑steel pipe fittings are commonly supplied to ASTM A105/ A182 specifications, with pressure ratings up to 150 bar for grade 316L, while carbon‑steel seamless tubes follow API 5L and ASTM A53 standards. Typical flange grades range from Class 150 to Class 600, and machines for pipe grooving or cutting are classified under HS 8461 and are expected to meet ISO 9001 quality management systems.

Trade and Export Information - HQ Pipeline Co., Ltd.

China is a major exporter of steel pipe products, with the HS 7304‑7307 families accounting for a sizable share of global shipments to the Middle East, Southeast Asia, Africa and Latin America. Buyers of seamless steel pipes and forged fittings usually request mill test reports, conformity to ASTM/ISO standards, and compliance with the European PED or US API specifications, depending on the end market. HS codes such as 7304.19 (seamless steel pipes), 7307.99 (forged fittings), 7307.29 (stainless forged fittings) and 7306.19 (welded steel pipes) are subject to customs inspection for material certificates and proper marking. Export logistics from China typically employ 20‑ft or 40‑ft containers, with protective coating or oil‑based rust inhibitors for carbon‑steel items, and stainless‑steel products are often packed in wooden crates with moisture‑absorbing liners. Certifications commonly required by importers include ISO 9001, ISO 14001 and, where applicable, CE marking for pressure equipment. The supplier’s target markets are not listed, so buyers should confirm the appropriate incoterms (e.g., FOB Shanghai or CIF destination) and any required phytosanitary or anti‑dumping documentation.

Sourcing from HQ Pipeline Co., Ltd. - Buyer Guidance

When sourcing from HQ Pipeline, request mill test reports (MTR) that detail chemical composition and mechanical properties for each steel grade cited in the catalogue. Verify that forged fittings and flanges meet the relevant ASTM A105, A182 or API 6A pressure‑class specifications, and ask for third‑party inspection certificates such as SGS or Bureau Veritas if required by the destination country. Confirm the HS code declared for each item matches the product description (e.g., 7304.19 for seamless pipes, 7307.29 for stainless forged fittings) to avoid customs delays. Typical minimum order quantities for forged components range from 500 kg to 5 ton depending on size, while machine tools like pipe grooving or cutting machines are usually sold per unit with lead times of 30‑45 days. Ensure packaging meets the buyer’s handling requirements - steel pipes are often bundled in wooden pallets with anti‑corrosion coating, and heavy machinery is shipped on flat‑rack containers with bracing.

What types of pipe fittings are included in HQ Pipeline’s catalogue?

The catalogue lists forged fittings in carbon steel (ASTM A105) and stainless steel 304/316 (ASTM A182), high‑pressure forged fittings of stainless steel 316L (ASTM A182 F316L), butt‑welded fittings of stainless steel 304/304L and 316/316L, as well as grooved fittings and steel pipe nipples and couplings.

Which material standards apply to the seamless steel pipes offered?

Seamless steel pipes are specified as carbon steel Grade B to ASTM A106‑B or ASTM A53‑B, falling under HS 7304.19. They are typically supplied to API 5L or ASTM A53 pressure‑class requirements.

How can I obtain material test reports for the forged flanges?

Request a mill test report (MTR) that includes chemical composition, tensile strength, hardness and heat‑treatment details for the stainless‑steel grades 304/304L, 316/316L indicated for the forged flanges (HS 7307.29).

What is the typical packaging for the pipe grooving machine?

Pipe grooving machines (HS 8461.90) are usually packed in a wooden crate with internal foam padding and secured on a steel frame to protect the alloy‑steel rollers during sea freight.

Which HS codes correspond to the hangers and supports?

Hangers and supports are classified under HS 7308.90 and are made from galvanized or black carbon steel according to the catalogue.

What lead time should I expect for forged stainless‑steel fittings?

Lead times for forged stainless‑steel fittings such as those under HS 7307.99 are commonly 30‑45 days from order confirmation, subject to material availability.

Are the products compliant with API or PED standards?

The catalogue does not state specific certifications, so buyers should request documentation proving compliance with API 6A or PED if the fittings are intended for pressure‑equipment applications.

What are the minimum order quantities for grooved couplings?

Minimum order quantities for grooved couplings are typically expressed in weight, ranging from 500 kg to 1 ton, but the exact figure should be confirmed with the supplier.