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3/8" High Pressure J1402 Air Brake Hose
| Inside Diameter | Outside Diameter | Burst Pressure | Nominal Weight | Bending Radius | |||||
| mm | inch | mm | inch | bar | psi | kg/m | lbs/ft | mm | inch |
| 9,5 | 3/8 | 19 | 0,75 | 60 | 900 | 0,24 | 0,16 | 89 | 3,5 |
| 12,5 | 31/63 | 22,5 | 0,89 | 60 | 900 | 0,31 | 0,21 | 102 | 4,0 |
| 14,5 | 4/7 | 24,5 | 0,97 | 60 | 900 | 0,33 | 0,22 | 115 | 4,5 |





| Air | Air hoses are used to convey compressed air for pneumatic systems. These air hoses must have high strength to handle high pressures in order to prevent leakage and damage. In addition, oil-based lubricants are sometimes added to the compressed air for smooth running of the equipment. Therefore, these air hoses must also be oil resistant. To handle the high pressure and oil-based lubricants, rubber is the common material choice for an air hose. |
| Gas | In industrial facilities, the gases that are transported may be toxic and/or flammable. Such applications should give special attention to selecting the right type of hose and their fittings. The gas hoses must be leak proof and resistant to breaking. |
| Materials | Rubber, PVC , PTFE |
| Rubber hose | Rubber is the most commonly used materials and is an inexpensive choice (in comparison to other materials) for air and gas hoses. These hoses are strong, flexible, durable and can handle different heat and temperature variations. Rubber compounds like EPDM and NBR also make a great choice for air and gas hoses. EPDM rubber provides great resistance with heat, temperature and ozone. Similarly, NBR is resistant to oil and chemicals. However, rubber cannot provide zero permeability and cannot be used for applications which requires high purity. A high purity gas has low amount of other gases present, making them better quality. |
| PVC hose | PVC is a widely used material for general purpose air and gas hose application. PVC hoses are inexpensive, durable and lightweight. They are lightweight, therefore, practical to use outdoors or at greater heights. |
| PTFE hose | PTFE (Polytetrafluoroethylene) hoses are suitable for high pressure industrial applications. They are durable, flexible and economical. For applications requiring high purity, PTFE can be exposed to a “post-sintering” process. During this process, the PTFE is processed again at controlled temperature and pressure. This helps in increasing the number of molecular bonds, increasing strength as well as wall thickness of the hose, resulting in reduced diffusion. |



Qingdao Kingdaflex Industrial Co., Ltd is a reliable manufacturer and exporter of hydraulic hose and industrial hose in China for more than 15 years. Since the establishment, we have controlled and inspected raw materials strictly to ensure the quality. Meanwhile, we are continuing to refine our manufacturing and processing systems to achieve customers’ requirements. Our all the products are produced according to SAE standard, DIN standard, Gost standard.
Hydraulic Hose including:
R1AT/1SN, R2AT/2SN, 4SP/4SH/R12, R3/R6, R7/R8, R13/R15 etc.
Industrial Hose including:
Air/Water Hose, Oil/Fuel Hose, Welding Hose, EPDM Hose, Suction & Discharge Hose, Sandblast Hose, A/C Hose, Layflat Hose, Fire Sleeve, Concrete Hose, Slurry Hose etc.
We provide OEM and ODM service. Quality is our culture, our mission is making the transmission more powerful. Hope we can become one of your supplier in China. With us your money is in safe, your business is in safe! Welcome customers to visit us!

Q1. Who is Kingdaflex?
A: Kingdaflex is a professional manufacturer and exporter for hydraulic hose, industrial hose and fire sleeve in the market more than 15 years. We have exported to 30 countries with good reputation.
Q2. Do you have OEM servie?
A: Yes, we have OEM and ODM service.
Q3. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings.
Q4. What is your sample policy?
A: Usually the sample is free of charge, but the customers have to pay for the freight charge.
Q5. What is your payment term?
A: T/T 30% as deposit, and 70% before delivery or against copy of documents.
Q6. What is your delivery term?
A: EXW, FOB, CFR, CIF, DDU.
Q7. How about your delivery time?
A: Generally it will take 25 days for one container.
Q8. Do you have quality certificate?
A: Yes, we have ISO, SGS, CE and releated test report.
Q9. How long can you guarantee the goods?
A: We guarantee the goods one year.
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