Category Archives: Blog

Recently, many multiple sizes for the 4140 plates are arriving at our warehouse from the brands mill. So I updated the stock list of 4140 plate for sale to our customers friends.

I met a customer, she is asking for the quotation of our stock 4140 plate for sale. But she was cheated by other supplier before. It seems that she is very difficult to believe someone especially for the new supplier.

For the 4140 plate is our running stock item, she is requested to make the 100%payment before delivery. And we explained to her that it is OK if it is picked from the stock size directly. But she preferred it needs to be the same terms if she requests the customized cutting size. In this way, it really is difficult for us if there is no deposit. As if we cut it to customized size, once the order is changed or canceled, we will have a big loss. This tailor-made size will be difficult to sell to other customers.

Sometimes, when we met someone, cooperated with someone and to be good friends with each other. It really needs a great fate. This fate is from mutual trust and sincere.

Our OTAI is not doing business for only one or two days.

We are not only doing business only for one or two customers. Our company is keeping to seek long-term development based on good faith. Since these 21 years, we have cooperated with all our overseas customers with sincere attitudes.

So sometimes it’s useless to say too much because someone won’t listen to you so much. Then we might as well do more to let them see our integrity. Come and with us, if you have any request on the steel items. Now we are having the 4140 plate for sale. You never know until you try, and you will be happy and lucky to find us here as a reliable supplier.  Doing is believing!

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: jack@otaisteel.com

4140 q&t plate, it is usually used on making shafts, different gears, connecting rods, engine cylinders, springs and fishing tools. Recently, I communicated with my customer friend, she is asking for the 4140 q&t plate inquiry. But it seems that it is difficult for her to trust a new customer because she experienced the cheated by some Chinese suppliers before.

Here following is the experience she shared with us.When I bought the steel in 2 containers, and I received an equivalent with no nickel, I placed my complaint and they said the material work the same way as a real steel grade. But that is not truth, I had to scrap the material and lost a lot of money.

Second I was working with a supplier in hollow bar, several shippments with no problem and suddenly he delivered a material with tags with different description as in invoice. Customs stop my shippment for more than 6 months. Finally we pay in delays per container, truck and fines. The supplier just said they did that in order to avoid the Chinese tax. I try to sue them, but a lawyer in china told me. I did not have any possibility to win in a Chinese court.
And she said there is a lot of ghost companies with spectacular web pages, unfortunately a lot of companies are being cheated by these companies.

And I am so appreciated for her open sharing such details to me. It really is not the first time I hear from our new customer to share their cheated experience from other suppliers. So it is true that customers can’t just focus your points on the cheap price. Seeing is believing, but mostly, we can not visit the company on site. Like this year, because of the virus, it does not make sense to visit.

But we could spend some time on knowing more about the background of this company.

*Like the quality certificate, and which famous brand company they supply for.

*Learn that how the supplier to control the quality, checking and testing.

*Ask the 3rd party test center to the factory to make the testing accordingly if possible.

*Make some trial order or small order when you work with the new supplier at the 1st time. So that you could see what is the actual performance the supplier do.

OTAI keep the stock 4140 q&t plate and hot rolled plates in daily 800-1000Tons at warehouse. We always welcome all our new customers to know more about us. We will open share our true us to you.

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: jack@otaisteel.com

EN19 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 EN19 prepared steel plate keeps a daily inventory of 500 tons which is hard for our competitors.

EN19 steel, the steel has good workability, machining deformation of small, anti-fatigue performance is quite good.

EN19 Steel is a high-quality Quenched and Tempered Alloy Structural steel. It belongs to the high-quality medium carbon steel. After quenched & tempered, its hardenss is 28-34 HRC. EN 19 steel Annealing delivery hardenss less than 250HB.
ASTM EN 19 steel is an alloy structural steel. EN 19 is used for engineering structural, use in Machine tool and automotive industries gear, gears, shafts, spindles, gears, bolts, studs, and a wide variety of applications. Where a good quality high tensile steel grade is suited.

For the purchase of an EN19 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 EN19 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.

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.