About Zs Industries Co., Ltd. - Metal Castings & Forgings Supplier in China

China, with a catalogue of ten listed products, supplies metal casting and machining items across several categories including Metal Castings & Forgings, Cast Iron, Aluminum Die Casted Parts, CNC Machines & Spare Parts, Injection Moulded Products, Scientific Instruments and Machined Components. The catalogue records items such as Stainless Steel Investment Casting (HS 7325.10) made from SS 304, SS 316 or SS 316L, China Customized Iron Casting Parts (HS 7325.10) in grey iron grades GG15‑GG30 and ductile iron grades GGG40‑GGG70, and ISO9001 Certificated Aluminum Alloy Casting (HS 7616.99) using ADC12, A380, A360 or AlSi9Cu3 alloys. Additional entries list Precision Casting (HS 8481.80) in stainless steel, Heavy Duty Sand Casting Iron Casting (HS 7325.10), Forging Parts (HS 7326.19) in carbon steel S355J2G3, 40Cr, 40CrMo and stainless steel SS316, together with generic entries for high‑precision parts, plastic injection molding, deep drawn parts and stamping parts.

The product descriptions specify the principal material families and the corresponding HS‑code families used for customs classification. Stainless steel items fall under HS chapter 73.25 for iron and steel castings, aluminum alloy castings under HS 76.16, and forged carbon‑steel components under HS 73.26. Several catalogue lines omit HS codes, indicating that the supplier may handle additional machining or stamping services beyond the listed customs categories. The range therefore covers both ferrous and non‑ferrous alloys as well as polymer‑based injection moulded components.

Product Range and Specialties of Zs Industries Co., Ltd.

The stainless steel investment castings listed are produced in grades SS 304, SS 316 and SS 316L, which are standard for corrosion‑resistant components in food processing, medical equipment and marine hardware. Typical industry specifications reference ASTM A240 for chemical composition and surface finish, with tolerance of ±0.2 mm on critical dimensions. Grey iron castings (GG15‑GG30) and ductile iron (GGG40‑GGG70) are common in automotive engine blocks and pump housings; they are usually supplied to ASTM A536 or EN‑1563 standards, with tensile strengths ranging from 250 MPa (GG15) to 450 MPa (GGG70). Aluminum alloy castings such as ADC12, A380, A360 and AlSi9Cu3 are widely used in lightweight automotive brackets and consumer electronics, conforming to JIS A 6209 or ASTM B108 standards with typical melt flow indices of 20‑30 g/10 min.

The forging products described use carbon steel grades S355J2G3, 40Cr and 40CrMo, which meet EN 10025‑2 and are suitable for structural and high‑strength applications; surface hardness is often specified between 150‑250 HB. The aluminum alloy casting under HS 7616.99 is produced by high‑pressure die casting, delivering density around 2.7 g/cm³ and porosity below 0.5 %. The plastic injection‑moulded items, although not detailed with material, typically involve engineering polymers such as POM, PA66 or PP, with melt flow rates from 5‑30 g/10 min and dimensional tolerances of ±0.1 mm.

Trade and Export Information - Zs Industries Co., Ltd.

China remains one of the world’s largest exporters of metal castings and forged components, supplying automotive, construction and machinery sectors in Europe, North America and Southeast Asia. The HS‑code 7325.10 for iron and steel castings and 7616.99 for aluminum alloy castings are routinely inspected under the Shanghai Customs inspection regime, and buyers often request certificates of conformity to ISO 9001, CE marking for equipment parts, and RoHS compliance for any polymer‑based items.

Typical export logistics involve loading the castings in wooden crates or steel pallets, with containerization in 20‑ft or 40‑ft containers depending on weight; a standard 20‑ft container can hold approximately 15 tonnes of steel castings. Incoterms most frequently used are FOB Shanghai or CIF destination port, and buyers should verify that the supplier can provide material test reports (MTR), chemical analysis certificates and, where required, third‑party inspection reports such as SGS or BV.

Sourcing from Zs Industries Co., Ltd. - Buyer Guidance

When sourcing from Zs Industries, buyers should request a material test report that confirms the chemical composition and mechanical properties of the stainless steel, grey iron, ductile iron or aluminum alloy specified. For precision castings, a dimensional inspection report with tolerance verification and surface roughness (Ra ≤ 1.6 µm) is standard, and the supplier’s ISO 9001 certificate, if available, should be reviewed.

Typical minimum order quantities for custom castings range from 0.5 tonne to 5 tonnes depending on size, with lead times of 4‑8 weeks after final drawing approval. Samples can be requested in the form of a pilot casting or a short‑run injection‑moulded part, and packaging should be confirmed as wooden crates with protective padding to prevent damage during sea freight.

What metal casting categories are listed in Zs Industries' catalogue?

The catalogue includes stainless steel investment castings, grey and ductile iron casting parts, aluminum alloy die‑castings, heavy‑duty sand cast iron, and forged carbon‑steel components, each classified under HS codes 7325.10, 7616.99, 7326.19 or 8481.80.

Which stainless steel grades are available for the investment casting product?

The stainless steel investment casting is offered in grades SS 304, SS 316 and SS 316L, which conform to ASTM A240 specifications for corrosion‑resistant applications.

How can a buyer verify the material specifications of the iron casting parts?

Buyers should request a material test report that includes chemical analysis per ASTM A536 (grey iron) or EN‑1563 (ductile iron) and mechanical test results such as tensile strength and hardness.

Does Zs Industries provide any quality management certification?

The product description for the aluminum alloy casting references ISO 9001 certification; buyers are advised to ask for a current ISO 9001 certificate or equivalent quality system documentation.

What is the typical lead time for a custom aluminum alloy die‑casting?

For a standard aluminum alloy such as ADC12 or A380, lead times are usually 4‑6 weeks after the engineering drawing is approved, with additional time for tooling if required.

What packaging and shipping methods are commonly used for the heavy sand‑cast iron parts?

Heavy sand‑cast iron components are generally packed in reinforced wooden crates, secured on steel pallets, and shipped in 20‑ft or 40‑ft containers under FOB Shanghai or CIF terms.

Which HS codes apply to the forging and precision casting items?

Forging parts fall under HS 7326.19, while precision stainless‑steel casting listed under HS 8481.80; both codes are part of the broader chapter 73 and chapter 84 customs classifications for metal products.

How should a buyer request a sample of a precision casting?

A buyer can request a pilot‑run sample based on the approved CAD drawing; the supplier typically provides a short‑run casting with the same material grade and surface finish for dimensional verification before full‑scale production.