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Typical materials: A216 and various grades of steel

Steel is the most widely used engineering and construction material in the world. A216 is a grade of carbon steel. The material composition of carbon steel is around 98% iron, with carbon content ranging from 0.05% to 2%. It may also contain minute amounts of cobalt, chromium, molybdenum, niobium, nickel, manganese, copper, and silicon.

• Carbon steel is easier to machine and is commonly used in buildings, bridges, gears, axles, pipelines and couplings, cars, refrigerators, and washing machines.
• It has higher tensile strength, and so is used to make blades, cutting tools, dies, springs, and high-strength wires.
• Carbon steel has better malleability and durability.

Material composition:

• 0.30 % carbon
• 1% manganese
• 0.035% sulfur
• 0.6% silicon
• 0.3% copper
• 0.5% nickel
• 0.5% chromium
• 0.3% molybdenum
• 0.03% molybdenum

Maximum use temperature: 425℃ (797℉)

Tensile strength: 655 Mpa (95 ksi)

Common MOQ: 10 to 10,000 pcs

The MOQ for common or standardized parts is typically higher. MOQs are mostly negotiable, but buyers are advised to be reasonable with their numbers.

Manufacturing methods: Casting and machining

• The mold casting method is used in the production of the valves
• Once the component is completed, it is machined to meet the client’s exact specifications
• Precise components and intricate parts
• Accurate and smooth surfaces

Manufacturing cluster area: Shanghai

Shanghai is called the commercial capital of China. It is located in the southern estuary of the Yangtze and is one of the four directly administered municipalities of the country. Shanghai is also the most populated urban area in China.

Shanghai is the hub of international trade and finance in China. It is home to the Shanghai Stock Exchange and the Shanghai free-trade zone, the first of its kind in China. Known for its finance, trade, and shipping industries, the city also has the world’s largest port by cargo throughput.

Manufacturing is another key industry in Shanghai. Other important industries are electronic information products, automobiles, petrochemicals, fine steel, equipment, and bio-medicine.

(Source: China Briefing)

Application: Heating and hydraulics

Carbon steel valves have excellent mechanical properties. They also offer very good resistance to sulfides and stress corrosion. They are known for their toughness, which is why they are used in hydraulic systems.

Steel valves can also withstand high heat. The industries that extensively use carbon steel valves are the power generation industry, petrochemical industry, gas industry, and the chemical industry.

Common issues: Material integrity and dimensional control

The components go through many in-process quality checks to ensure that you get the highest quality products, and your order meets your quality expectations. This includes making sure that the components are made to your exact specifications.

Quality Control

• CMM inspection to test the accuracy of the manufactured components
• Text jigs and fixtures to replicate manufactured products with consistent quality