Category Archives: Blog

Precision 4140 flat bar supplier: We keep a daily inventory of 1500 tons

Precision 4140 flat bar supplier China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

1)  4140 steel belongs to the alloy structural steel. After Quenching & Tempering, its hardness is 28-34 HRC.

2) 4140 steel used for bending machine molds.

3) Besides, it can be used to under 2000m deep well of oil drill pipe joint and the fishing tool.

4) Also, it can be used for engineering structural parts, like high tensile shafts, gears, pinions, and spindles.

4140 hr plate: Its heat treatment has good strength and good comprehensive mechanical properties.

The common stainless steel’s chromium content is higher than 12.5%. So it has anti-rust performance. From the analysis of the composition, 4140 steel also has chromium. But its chromium content is only 0.8%-1.1%, which is far lower than the standard for rust prevention. Therefore, 4140 steel is not stainless steel. Please pay attention to its rust prevention when using it.

But 4140 steel can be used to make gears. Because lubricating oil is often used when gears are running. The lubricating oil can protect the gear from rust while protecting the normal operation of the gear.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (Precision 4140 flat bar supplier: We keep a daily inventory of 1500 tons)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customers’ problems without any hesitation on responsibility. We are welcome to your kind inquiry.

A2 steel bar

A2 steel bar, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

A2 steel/1.2363 is a German Cold work tool alloy steel material grade.

A-2 steel is an air hardening alloy chromium-molybdenum-Vanadium die steel. As cold work steel, its grade contains 5% chromium. In applications that require greater size stability, A2 steel is preferable to O1 tool steel.

Advantage of A2 steel in repair welding operation: since the preheating and post-heating temperature is lower than SKD11, repair welding operation is easier.

A typical application such as blanking die, the molding dies, blanking dies, stamping die, stamping die, die, extrusion die, boxing, shear knife blade, instrumentation, knurling tools, volume, head, and machine parts. (A2 steel bar)

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size.

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customers’ problems without any hesitation on responsibility. We are welcome to your kind inquiry.

Precision 4140 bar supplier: We keep a daily inventory of 1500 tons

Precision 4140 bar supplier China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

1)  4140 steel belongs to the alloy structural steel. After Quenching & Tempering, its hardness is 28-34 HRC.

2) 4140 steel used for bending machine molds.

3) Besides, it can be used to under 2000m deep well of oil drill pipe joint and the fishing tool.

4) Also, it can be used for engineering structural parts, like high tensile shafts, gears, pinions, and spindles.

4140 hr plate: Its heat treatment has good strength and good comprehensive mechanical properties.

The common stainless steel’s chromium content is higher than 12.5%. So it has anti-rust performance. From the analysis of the composition, 4140 steel also has chromium. But its chromium content is only 0.8%-1.1%, which is far lower than the standard for rust prevention. Therefore, 4140 steel is not stainless steel. Please pay attention to its rust prevention when using it.

But 4140 steel can be used to make gears. Because lubricating oil is often used when gears are running. The lubricating oil can protect the gear from rust while protecting the normal operation of the gear.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (Precision 4140 bar supplier: We keep a daily inventory of 1500 tons)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customers’ problems without any hesitation on responsibility. We are welcome to your kind inquiry.

A2 steel bar supplier

A2 steel bar supplier, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

A2 steel/1.2363 is a German Cold work tool alloy steel material grade.

A-2 steel is an air hardening alloy chromium-molybdenum-Vanadium die steel. As cold work steel, its grade contains 5% chromium. In applications that require greater size stability, A2 steel is preferable to O1 tool steel.

Advantage of A2 steel in repair welding operation: since the preheating and post-heating temperature is lower than SKD11, repair welding operation is easier.

A typical application such as blanking die, the molding dies, blanking dies, stamping die, stamping die, die, extrusion die, boxing, shear knife blade, instrumentation, knurling tools, volume, head, and machine parts. (A2 steel bar supplier)

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size.

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customers’ problems without any hesitation on responsibility. We are welcome to your kind inquiry.

Precision 4140 flat supplier: We keep a daily inventory of 1500 tons

Precision 4140 flat supplier China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

1)  4140 steel belongs to the alloy structural steel. After Quenching & Tempering, its hardness is 28-34 HRC.

2) 4140 steel used for bending machine molds.

3) Besides, it can be used to under 2000m deep well of oil drill pipe joint and the fishing tool.

4) Also, it can be used for engineering structural parts, like high tensile shafts, gears, pinions, and spindles.

4140 hr plate: Its heat treatment has good strength and good comprehensive mechanical properties.

The common stainless steel’s chromium content is higher than 12.5%. So it has anti-rust performance. From the analysis of the composition, 4140 steel also has chromium. But its chromium content is only 0.8%-1.1%, which is far lower than the standard for rust prevention. Therefore, 4140 steel is not stainless steel. Please pay attention to its rust prevention when using it.

But 4140 steel can be used to make gears. Because lubricating oil is often used when gears are running. The lubricating oil can protect the gear from rust while protecting the normal operation of the gear.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (Precision 4140 flat supplier: We keep a daily inventory of 1500 tons)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customers’ problems without any hesitation on responsibility. We are welcome to your kind inquiry.

A2 steel flat supplier

A2 steel flat supplier, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

A2 steel/1.2363 is a German Cold work tool alloy steel material grade.

A-2 steel is an air hardening alloy chromium-molybdenum-Vanadium die steel. As cold work steel, its grade contains 5% chromium. In applications that require greater size stability, A2 steel is preferable to O1 tool steel.

Advantage of A2 steel in repair welding operation: since the preheating and post-heating temperature is lower than SKD11, repair welding operation is easier.

A typical application such as blanking die, the molding dies, blanking dies, stamping die, stamping die, die, extrusion die, boxing, shear knife blade, instrumentation, knurling tools, volume, head, and machine parts. (A2 steel flat supplier)

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size.

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customers’ problems without any hesitation on responsibility. We are welcome to your kind inquiry.

Precision 4140 steel supplier: We keep a daily inventory of 1500 tons

Precision 4140 steel supplier China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

1)  4140 steel belongs to the alloy structural steel. After Quenching & Tempering, its hardness is 28-34 HRC.

2) 4140 steel used for bending machine molds.

3) Besides, it can be used to under 2000m deep well of oil drill pipe joint and the fishing tool.

4) Also, it can be used for engineering structural parts, like high tensile shafts, gears, pinions, and spindles.

4140 hr plate: Its heat treatment has good strength and good comprehensive mechanical properties.

The common stainless steel’s chromium content is higher than 12.5%. So it has anti-rust performance. From the analysis of the composition, 4140 steel also has chromium. But its chromium content is only 0.8%-1.1%, which is far lower than the standard for rust prevention. Therefore, 4140 steel is not stainless steel. Please pay attention to its rust prevention when using it.

But 4140 steel can be used to make gears. Because lubricating oil is often used when gears are running. The lubricating oil can protect the gear from rust while protecting the normal operation of the gear.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (Precision 4140 steel supplier: We keep a daily inventory of 1500 tons)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customers’ problems without any hesitation on responsibility. We are welcome to your kind inquiry.

Precision 4140 steel bar: We keep a daily inventory of 1500 tons

Precision 4140 steel bar China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

1)  4140 steel belongs to the alloy structural steel. After Quenching & Tempering, its hardness is 28-34 HRC.

2) 4140 steel used for bending machine molds.

3) Besides, it can be used to under 2000m deep well of oil drill pipe joint and the fishing tool.

4) Also, it can be used for engineering structural parts, like high tensile shafts, gears, pinions, and spindles.

4140 hr plate: Its heat treatment has good strength and good comprehensive mechanical properties.

The common stainless steel’s chromium content is higher than 12.5%. So it has anti-rust performance. From the analysis of the composition, 4140 steel also has chromium. But its chromium content is only 0.8%-1.1%, which is far lower than the standard for rust prevention. Therefore, 4140 steel is not stainless steel. Please pay attention to its rust prevention when using it.

But 4140 steel can be used to make gears. Because lubricating oil is often used when gears are running. The lubricating oil can protect the gear from rust while protecting the normal operation of the gear.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (Precision 4140 steel bar: We keep a daily inventory of 1500 tons)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customers’ problems without any hesitation on responsibility. We are welcome to your kind inquiry.

A2 steel sheet supplier

A2 steel sheet supplier, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

A2 steel/1.2363 is a German Cold work tool alloy steel material grade.

A-2 steel is an air hardening alloy chromium-molybdenum-Vanadium die steel. As cold work steel, its grade contains 5% chromium. In applications that require greater size stability, A2 steel is preferable to O1 tool steel.

Advantage of A2 steel in repair welding operation: since the preheating and post-heating temperature is lower than SKD11, repair welding operation is easier.

A typical application such as blanking die, the molding dies, blanking dies, stamping die, stamping die, die, extrusion die, boxing, shear knife blade, instrumentation, knurling tools, volume, head, and machine parts. (A2 steel sheet supplier)

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size.

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customers’ problems without any hesitation on responsibility. We are welcome to your kind inquiry.

Precision 4140 steel sheet: We keep a daily inventory of 1500 tons

Precision 4140 steel sheet China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

1)  4140 steel belongs to the alloy structural steel. After Quenching & Tempering, its hardness is 28-34 HRC.

2) 4140 steel used for bending machine molds.

3) Besides, it can be used to under 2000m deep well of oil drill pipe joint and the fishing tool.

4) Also, it can be used for engineering structural parts, like high tensile shafts, gears, pinions, and spindles.

4140 hr plate: Its heat treatment has good strength and good comprehensive mechanical properties.

The common stainless steel’s chromium content is higher than 12.5%. So it has anti-rust performance. From the analysis of the composition, 4140 steel also has chromium. But its chromium content is only 0.8%-1.1%, which is far lower than the standard for rust prevention. Therefore, 4140 steel is not stainless steel. Please pay attention to its rust prevention when using it.

But 4140 steel can be used to make gears. Because lubricating oil is often used when gears are running. The lubricating oil can protect the gear from rust while protecting the normal operation of the gear.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (Precision 4140 steel sheet: We keep a daily inventory of 1500 tons)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customers’ problems without any hesitation on responsibility. We are welcome to your kind inquiry.