Category Archives: Blog

4340 prepared steel plate: 500 tons stock for fast delivery

Otai exports various tool steel and alloy to more than 30 countries from Europe and America, Middle East, and Asia. Our steel materials meet DIN / ASTM / EN / JIS etc different international standards. Otai’s 4340 prepared steel plate keeps a daily inventory of 500 tons which is hard for our competitors.

4340 alloy structural steel belongs to gear steel.

It is usually used for important tempering parts that require good toughness, high strength, and large size, such as heavy machinery high-load shaft, turbine shaft with a diameter greater than 250mm, helicopter rotor shaft, turbojet engine turboshaft, blade, high-load transmission parts, crankshaft fasteners Gear, etc. It can also be used for rotor shaft and blade with an operating temperature over 400℃. It can also be used to make important parts with special performance requirements after nitriding treatment, which can be used for ultra-high-strength steel after low-temperature tempering or isothermal quenching.

For the purchase of a 4340 Steel plate, foreign buyers often complain about the high price of small quantities from suppliers. Most of the domestic suppliers are not direct manufacturers, need to transfer goods from other suppliers, midway through many hands, so that the product price is very high. But for us, Otai, we are the direct manufacturers to cut out the middlemen and our prices are very competitive. In the meantime, we stock 4340 steel plates and keep a daily inventory of 500 tons. It means that we can deliver the goods as soon as possible.

Otai does not act as a material handler. We possess proprietary technology and continuously iterates. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. When customized special steel is hard to get, Otai settles satisfactorily completely.

42crmo4 steel prepared steel plate: 500 tons stock for fast delivery

Otai exports various tool steel and alloy to more than 30 countries from Europe and America, Middle East, and Asia. Our steel materials meet DIN / ASTM / EN / JIS etc different international standards. Otai’s 42crmo4 prepared steel plate keeps a daily inventory of 500 tons which is hard for competitors.

42CrMO4 steel belongs to European standard alloy structural steel.

It has high strength, high hardenability, good toughness, small deformation during quenching, and high creep and durable strength at high temperatures. It is characterized by good machinability, easy polishing, easy to bite flowers. 42CrMo4 can be used for manufacturing locomotive traction gear, supercharger drive gear, rear axle, maximum load connecting rod and spring clip, 42CrMo4 steel can also be used for oil deep well pipe joint and fishing tool below 2000m.

Otai is the largest wholesaler of 42CrMO4 Steel plates in South China. For the purchase of 42CrMO4 steel plates, foreign buyers often complain that the actual delivery time of suppliers is very long. In order to get orders, most domestic suppliers will give customers a very short delivery time. But in fact, they do not prepare so much inventory, so they need to transfer goods from other suppliers. This process makes the delivery time longer and longer. But for us, Otai, we can achieve our 42CrMO4 steel plates stocks more than 500 tons and deliver the goods as soon as possible.

Otai does not act as a material handler. We possess proprietary technology and continuously iterates. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. When customized special steel is hard to get, Otai settles satisfactorily completely.

4140 prepared steel plate: 500 tons stock for fast delivery

Otai exports various tool steel and alloy to more than 30 countries from Europe and America, Middle East, and Asia. Our steel materials meet DIN / ASTM / EN / JIS etc different international standards. Otai’s 4140 prepared steel plate keeps a daily inventory of 500 tons which is hard for competitors.

4140 steel, the steel has good workability, machining deformation of small, anti-fatigue performance is quite good.

On the hardenability of steel, 4140 heat treatment has good strength and good comprehensive mechanical properties, good manufacturability, high yield. The highest temperature is 427 degrees Celsius. 4140 strength, high hardenability, and good toughness, quenching deformation of small, high temperature creep rupture strength, and high. It is used for manufacturing forgings with higher strength and larger tempering cross-section than 35CrMo steel, such as big gear for locomotive traction, supercharger drive gear, rear axle, connecting rod and spring clamp with great load, also can be used for drilling pipe joint and fishing tool of oil deep well below 2000m, and can be used for bending machine mold, etc.

For the purchase of 4140 steel plates, foreign buyers often complain that the actual delivery time of suppliers is very long. In order to get orders, most domestic suppliers will give customers a very short delivery time. But in fact, they do not prepare so much inventory, so they need to transfer goods from other suppliers. This process makes the delivery time longer and longer. But for us, Otai, we can achieve our 4140 steel plates stocks more than 500 tons and deliver the goods as soon as possible.

Otai does not act as a material handler. We possess proprietary technology and continuously iterates. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. When customized special steel is hard to get, Otai settles satisfactorily completely.

In our OTAI company, the 4140 plate material is our hot sell item ranked in Top1 in every year.And some customers asked that what this material will be used on? It could be applied on the Super charge Drive gear, large gear, Rear Axle. Besides, it could be applied on Spring clamp, connecting Rod, Tool joint.

For to be win-win with our overseas stockist partner together, from now on, our company will give the more great support to our partner. We are looking for the exclusive Agent partner for this 4140 plate material in different country. You do will have great favourable conditions if work with us as the exclusive agent partner.

First, the very competitive price specially only for you.

Secondly, you will have the 4140 plate material exclusive supply from us, so that you become the sole distributor in your local market.

Fast delivery date for the immediate shipment, so that you could make the inventory supplement in any time.

And we will give additional discount in the early of each year if the purchasing quantity reached a certain quantity.

It is for the longterm development and cooperation, so especially for the new customer, you will have not any worries about the quality.

For other more details, we could discuss it in deeply between each other, so that we conclude our common agreement on our win-win cooperation.

Now most of the stockist who sold 4140 plate material very often, they are so very happy and excited to see that we have this win-win policy. We sincerely hope our business could grow up together. Common long-term and fast development is our original intention and ultimate goal. Let us not forget our original intentions and run ahead.

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: jack@otaisteel.com

8620 steel and 9310 steel

Otai exports various tool steel and alloy to more than 30 countries from Europe and America, Middle East, and Asia. Our steel materials meet DIN / ASTM / EN / JIS etc different international standards. Today we will talk about 8620 steel and 9310 steel’s difference and its application.

8620 is the structural steel with the hardenability guaranteed by American standard, and the standard is as follows: ASTM A29/ A29m-2015 (hot forged and cold processed carbon steel and alloy steel bar).

It has high hardenability, no tempering brittleness, good weldability. Also, it has little tendency to form a cold crack, good maintainability, and cold strain plasticity. Generally used in quenching and tempering or carburizing state, used for manufacturing small and medium-sized automobile, tractor engine, and gear in the transmission system. Also, it can be used for oil drilling and metallurgy open mine cone bit teeth and teeth body. Manufacturing steam turbine gear whole rotor internal combustion engine connecting rod valve section forgings all can be made by 8620 steel. At the same time, the surface of 8620 steel after carburizing heat treatment has relatively high hardness, wear-resistance, and contact fatigue strength. While the core retains good toughness and can withstand high impact load. It can be used as automobile bearing, spindle, gear, mechanical parts, and other impact-resistant, wear-resistant workpieces.

9310 Alloy Steel (also known as AISI 9310 steel) is low alloy steel composed primarily of nickel and chromium.

The standard is ASTM A322. It shows high hardenability, high core hardness, and high fatigue strength. It also possesses solid ductility, weldability, and machinability properties. Its Components with large cross-section requiring high toughness and core strength. It Mainly used for such as critical aircraft engine gears, automotive applications, structural components, gears, rods, heat-treatable shafts, high-performance helicopter transmission gears, and other components.

Otai does not act as a material handler. We possess proprietary technology and continuously iterates. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. When customized special steel is hard to get, Otai settles satisfactorily completely.

4340 steel and 9310 steel

Otai exports various tool steel and alloy to more than 30 countries from Europe and America, Middle East, and Asia. Our steel materials meet DIN / ASTM / EN / JIS etc different international standards. Today we will talk about 4340 steel and 9310 steel’s difference and its application.

4340 alloy structural steel belongs to gear steel.

It is used for important tempering parts that require good toughness, high strength, and large size, such as heavy machinery high-load shaft, turbine shaft with a diameter greater than 250mm, helicopter rotor shaft, turbojet engine turboshaft, blade, high-load transmission parts, crankshaft fasteners, Gear and etc. It can also be used for rotor shaft and blade with an operating temperature over 400℃. It can also be used to make important parts with special performance requirements after nitriding treatment, which can be used for ultra-high-strength steel after low-temperature tempering or isothermal quenching.

9310 Alloy Steel (also known as AISI 9310 steel) is low alloy steel composed primarily of nickel and chromium.

The standard is ASTM A322. It shows high hardenability, high core hardness, and high fatigue strength. It also possesses solid ductility, weldability, and machinability properties. Its Components with large cross-section requiring high toughness and core strength, It Mainly used for such as critical aircraft engine gears, automotive applications, structural components, gears, rods, heat-treatable shafts, high-performance helicopter transmission gears, and other components.

Otai does not act as a material handler. We possess proprietary technology and continuously iterates. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. When customized special steel is hard to get, Otai settles satisfactorily completely.

4140 steel and 1045 steel

Otai exports various tool steel and alloy to more than 30 countries from Europe and America, Middle East, and Asia. Our steel materials meet DIN / ASTM / EN / JIS etc different international standards. Today we will talk about 4140 steel and 1045 steel’s difference and its application. 

4140 steel, the steel has good workability, machining deformation of small, anti-fatigue performance is quite good.

On the hardenability of steel, 4140 heat treatment has good strength and good comprehensive mechanical properties, good manufacturability, high yield. The highest temperature is 427 degrees Celsius. 4140 strength, high hardenability, and good toughness, quenching deformation of small, high temperature creep rupture strength, and high. It is used for manufacturing forgings with higher strength and larger tempering cross-section than 35CrMo steel, such as big gear for locomotive traction, supercharger drive gear, rear axle, connecting rod and spring clamp with great load, also can be used for drilling pipe joint and fishing tool of oil deep well below 2000m, and can be used for bending machine mold, etc.

ASTM SAE AISI 1045 steel is one of the commonly used medium carbon steels with an average carbon content of 0.45%.

It has medium tensile properties, good strength, toughness, and wears resistance. It can be treated by annealing, flame treatment, or induction hardening.C1045 is also known as 1045 cold-rolled steel (cold worked), and 1045 hot rolled steel is known as 1045 HR.

AISI SAE 1045 material is widely used in industrial applications where higher wear resistance and strength are required, typical applications including Light gears, shafts, axles, spindles, pins, guide rods, connecting rods, bolts, worms, crankshafts, machine components, etc.

Otai does not act as a material handler. We possess proprietary technology and continuously iterates. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. When customized special steel is hard to get, Otai settles satisfactorily completely.

En24 Steel bar sales promotion from Otai Special Steel in China . Otai Special Steel have export steel experience all over the world for more than 16 years . We have more than 100 repeat customer from Spain , Argentina , Chile , Ecuador , Brazil , Italy , Ukraine , Qatar , Turkey , U.A.E , Egypt ,  Kuwait , Bulgaria , Japan , Thailand , Singapore , Malaysia , Vietnam … … . And all our steel have provided to the steel giants like Dyson Krupp   Mitsubishi … …

Otai special Steel  provide the best quality production and most competitive price  . The fast delivery and the best supporting services of En24 steel bar sales promotion . Hope that all the strength company and quality stockbrokers to join us . And start our win-win cooperation business relationships from here in today . we want to through this En24 steel bar sales promotion to support our customer in the difficult period .

1.Adequate inventory make the price very competitive .

Otai Special Steel was the sole supplier of more than 800 tons En24 steel bar  inventory in South China . From June , our dailly warehouse number may exceed 800 tons . Which size was sold out , we may replenish inventory accordingly . We will make sure any size in any time have more stock list . I promise no other supplier could do this .

2.Excellent quality make En24 steel bar sales promotion more attractive .

Otai Special Steel has our own quality inspection instrument . Hand-held spectrometer use on Chemical composition analysis per heat and conform to the standard . UT test to check the material inside quality. Hardness test to guarantee the requirement. Physical checking to ensure tolerance .

3.The best service from Otai Special Steel let the customer could made the final decision .

Someone think that the sales promotion production may have problems . We promise that all the production from Otai have any trouble could be handle by Otai before shipment . The end-use guiding. Technical problems in the use of processing . Delivery problems . Shipping documents problems …… All the problems we could solve for you .

Welcome to contact with us directly if you have any interesting in our sales promotion .

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: jack@otaisteel.com

Our company promoted the 34CrNiMo6 steel material for the SPECIAL OFFER. The diameter is 35-130mm.

34CrNiMo6 steel after tempering, it is used to make important parts. The parts require good plasticity, high strength and large size. Such as high-load shafts in heavy machinery, steam turbine shafts with a diameter greater than 250mm. It also be used for rotor shafts and blades with operating temperatures exceeding 400°C. In addition, this steel can also be used to make important parts with special performance requirements after nitriding.

Regarding for this steel material, I have the experience to share with you guys, so that you could avoid the cheated by some not reliable suppliers.

Several years ago, I visited a new customer in abroad. And when we talked about the 34CrNiMo6 steel price, his first reaction was your price is too higher than other supplier. In fact, usually for the steel material price, it is very transparent in China steel market. It will be not a very big difference if it is the true material as itself. When he showed me some part info about his contract, I found what was the real reason. And his other supplier wrote the grade name 34CrNiMo6 steel on the contract, but the chemical composition did not match the 34CrNiMo6 exactly. The composition is for 4340 steel! So that supplier supplied the 4340 to him actually instead of 34CrNiMo6. It made the price different.

Therefore, hereby we sincerely have the friendly reminding to our customer friends. Please do not just focus on the price. You have to double check all the details before you sign the order contract. If you are not professional on it, you’d better to find the reliable supplier to cooperate.
Our OTAI Special steel with ISO certified origin from the brand mills in China, produced in a rigorous system and with traceability. We build ties with our customers and brand mills based on the pillars of ethics and transparency. OTAI do not give up honesty and cultivate relationships of loyalty and trust that aim at a prosperous partnership for both.

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: jack@otaisteel.com

8620 steel and 1045 steel

Otai exports various tool steel and alloy to more than 30 countries from Europe and America, Middle East, and Asia. Our steel materials meet DIN / ASTM / EN / JIS etc different international standards. Today we will talk about 8620 steel and 1045 steel’s difference and its application.

8620 is the structural steel with the hardenability guaranteed by American standard, and the standard is as follows: ASTM A29/ A29m-2015 (hot forged and cold processed carbon steel and alloy steel bar).

It has high hardenability, no tempering brittleness, good weldability. Also, it has little tendency to form a cold crack, good maintainability, and cold strain plasticity. Generally used in quenching and tempering or carburizing state, used for manufacturing small and medium-sized automobile, tractor engine, and gear in the transmission system. Also, it can be used for oil drilling and metallurgy open mine cone bit teeth and teeth body. Manufacturing steam turbine gear whole rotor internal combustion engine connecting rod valve section forgings all can be made by 8620 steel. At the same time, the surface of 8620 steel after carburizing heat treatment has relatively high hardness, wear-resistance, and contact fatigue strength. While the core retains good toughness and can withstand high impact load. It can be used as automobile bearing, spindle, gear, mechanical parts, and other impact-resistant, wear-resistant workpieces.

ASTM SAE AISI 1045 steel is one of the commonly used medium carbon steels with an average carbon content of 0.45%.

It has medium tensile properties, good strength, toughness, and wears resistance. It can be treated by annealing, flame treatment, or induction hardening. C1045 is also known as 1045 cold-rolled steel (cold worked), and 1045 hot rolled steel is known as 1045 HR. AISI SAE 1045 material is widely used in industrial applications where higher wear resistance and strength are required. Typical applications including Light gears, shafts, axles, spindles, pins, guide rods, connecting rods, bolts, worms, crankshafts, machine components, etc.

Otai does not act as a material handler. We possess proprietary technology and continuously iterates. We undertake every order to end and solve customer’s problems without any hesitation on responsibility. When customized special steel is hard to get, Otai settles satisfactorily completely.