Qingdao Valtech Manufacturing Co., Ltd.

Qingdao Valtech Manufacturing Co., Ltd. is based in China and lists 32 active products across its catalogue. The product set is dominated by ductile‑iron components such as couplings, dismantling joints, flanges, tees and bends, all classified under HS chapter 73 (e.g., 7307.19, 7307.93, 7307.11, 7307.21, 7307.23, 7303.00). The catalogue also includes a few non‑metal items, notably a UPVC socket bend (HS 3917.40) and stainless‑steel tees (HS 7307.23) made from grades 304 and 316, as well as household baskets without a listed HS code.

In addition to the material designations, the listings specify a range of international standards: ASTM A536 for ductile iron grades 400‑15 and 500‑7, EN‑GJS‑400‑15, EN‑GJS‑450‑10, ISO 1083, BS EN 545 and ISO 2531 for pipe‑fitting dimensions. The HS code 7307.19 appears most frequently, covering the majority of couplings, flanges and adaptors, while specialized items such as double‑socket bends use 7307.93 or 7307.11. This granular coding reflects the typical customs classification for cast‑iron pipe fittings.

The catalogue covers three principal material families: ductile (nodular) iron, stainless steel and UPVC. Ductile‑iron items are offered in grades GJS‑400‑15, GJS‑450‑10, EN‑GJS‑500‑7 and conform to ASTM A536 and ISO 1083, which define tensile strength, elongation and chemical composition. Stainless‑steel tees are supplied in grades 304 and 316, the most common austenitic grades for corrosion‑resistant piping. UPVC components follow the BS EN 545 specification, a standard for non‑plasticised PVC fittings used in potable‑water systems. Typical industry grades for ductile‑iron pipe fittings range from 400‑15 (≈350 MPa tensile) to 500‑7 (≈420 MPa tensile), and buyers often request certification of these mechanical properties.

Across the global market, ductile‑iron fittings are produced to meet EN‑1083/ISO 1083 dimensional tolerances and are inspected for impact resistance and surface hardness. Stainless‑steel pipe accessories are frequently required to meet ASTM A312 or EN 10210 for pressure ratings, while UPVC fittings must comply with ISO 1452 water‑quality standards. The product mix listed by Qingdao Valtech mirrors these widely accepted specifications, giving buyers a clear reference point for comparison.