About Qingdao Langshuo Metal Products Co, Ltd - Springs Supplier in China

Qingdao Langshuo Metal Products Co, Ltd is based in China and currently lists five active products across its catalogue. The company classifies its offerings under the broader categories of Springs and Metal Products, indicating a focus on both mechanical spring components and assorted metal‑based hardware. The product list includes a generic Spring, a Punching braket, a Welding can, a Welding door, and a Soaks product that is described with an HS code of 8514.31 and a material composition of refractory steel with ceramic‑fiber lining and alloy heating elements. Each entry aligns with the HS code families typically used for metal hardware and electrical heating equipment, reflecting the company’s product segmentation.

The Spring entry falls within the HS chapter 73 range for articles of iron or steel, while the Punching braket, Welding can and Welding door are also classified under similar steel product codes. The Soaks product is explicitly linked to HS code 8514.31, which covers electric heating appliances and parts. By listing these five items, the supplier provides a concise but varied portfolio of metal components used in industrial assembly, welding infrastructure, and high‑temperature processing applications.

Product Range and Specialties of Qingdao Langshuo Metal Products Co, Ltd

The catalogue’s Spring product corresponds to standard coil or leaf spring designs commonly manufactured from spring‑grade steel such as ASTM A228 (music wire) or ASTM A229 (oil‑tempered). Typical specifications include wire diameters from 0.5 mm to 5 mm, coil diameters up to 100 mm, and load capacities measured in newtons per millimetre. The Punching braket and Welding can/door are usually fabricated from carbon or alloy steel plates, conforming to thicknesses between 2 mm and 10 mm and often finished with powder coating or galvanisation for corrosion resistance. The Soaks product, described with refractory steel and ceramic‑fiber lining, aligns with high‑temperature furnace components that meet ASTM A335 (high‑temperature alloy pipe) and IEC 60335 safety standards for heating elements. Buyers typically request material certificates indicating compliance with these grades and may specify dimensions, tolerance ranges, and surface finish as part of the order.

Trade and Export Information - Qingdao Langshuo Metal Products Co, Ltd

China remains a major exporter of spring steel components and industrial metal hardware, supplying markets in Southeast Asia, Europe, and North America. Springs are usually coded under HS 73.21‑73.24, while welded metal housings and brackets fall under HS 73.30‑73.39. The Soaks product’s HS 8514.31 places it in the electric heating appliance segment, which often requires CE marking for the European market and UL listing for the United States. Common buyer requirements include ISO 9001 quality‑management certification, material test reports, and compliance with RoHS for any electrical parts. Shipping of these metal items typically uses 20‑ft or 40‑ft containers, with standard packaging in wooden crates or steel drums to protect against deformation during transit. Incoterms such as FOB Qingdao or CIF major ports are frequently used in contracts for these categories.

Sourcing from Qingdao Langshuo Metal Products Co, Ltd - Buyer Guidance

When sourcing the Spring or bracket items, buyers should request a mill test certificate (MTC) that details chemical composition, tensile strength, and hardness (e.g., Rockwell C 30‑45 for spring steel). For Welding cans and doors, verify dimensional drawings, surface‑treatment specifications, and any corrosion‑resistance coating test results. The Soaks product, being a heating element, usually requires a CE declaration of conformity, an IEC 60335 test report, and a performance chart showing maximum operating temperature and power rating in kilowatts. It is prudent to ask for sample pieces or a prototype run before committing to full‑scale production, and to confirm packaging dimensions and weight per unit to calculate container loading. Typical minimum order quantities range from 500 units for standard springs to 100 units for custom‑fabricated welding housings, with lead times of 30‑45 days after design approval.

What material standards apply to the Spring product?

The Spring is typically manufactured from spring‑grade steel such as ASTM A228 or A229, and buyers should request a mill test certificate showing chemical composition and hardness values.

Which HS code covers the Soaks product?

The Soaks product is listed under HS code 8514.31, which pertains to electric heating appliances and parts.

What certifications are usually required for the Soaks heating element?

Buyers generally request CE marking for European markets and an IEC 60335 safety test report, along with a material certificate for the refractory steel and ceramic‑fiber lining.

How are Welding cans and Welding doors typically packaged for export?

These metal housings are commonly packed in wooden crates or steel drums, with internal bracing to prevent deformation, and loaded into standard 20‑ft or 40‑ft containers.

What documentation should be obtained before ordering the Punching braket?

A mill test certificate, dimensional drawing approval, and any surface‑treatment test results (e.g., galvanisation thickness) should be secured prior to order confirmation.

What are typical lead times for custom metal products from this supplier?

Standard lead times range from 30 to 45 days after final design approval, with longer periods possible for specialized heat‑treatment or coating processes.

Which markets commonly import these metal products from China?

Major importers include manufacturers in Southeast Asia, automotive and appliance producers in Europe, and industrial equipment firms in North America.

What are common minimum order quantities for the listed items?

Typical MOQs are around 500 units for standard springs and 100 units for custom‑fabricated welding cans or doors, depending on size and specification.