We will provide you with excellent Hydraulic Cylinder Pipe, Chrome Plated Pipe, Self Aligned Tank Welding Roller and perfect pre-sales and after-sales service with all our heart. All employees in our company take 'quality first, reputation first, customer first' as the purpose and dedication to provide our clients with high quality,competitive products and services. We hope to go hand in hand with the majority of customers, cooperate friendly and create a win-win situation. We believe we will become a leader in developing and producing high quality products in both Chinese and international markets. We adhere to the customer-centric, improve service quality, standardize service behavior, and provide value-added services. We feel we are going to be your greatest choice.
1. Introduction
Hengtong Petrolic Machinery manufactures seamless steel tube for hydraulic cylinder, ready to hone tubes, honed tubes, skived and roller burnished tubes, chrome bar, piston rods, high-precision cold-drawn steel tubes and 4140 drilling tube, We are well-equipped with 300 ton, 150 ton, 65 ton, 20 ton of cold drawing machine,9 meters CNC boring machines, 20 sets honing machines , one set furnace and advanced quality testing equipment, which combine cold drawn, cold-rolled, heat treatment and traditional machining process.
2. Product Details
Application: Used for drilling, down hole motor stator tubes.
Size : ID from 70mm to 250mm
Length : Depends on customer requirement.
Material : 4140
Delivery Condition: Cold drawn / Q+T
ID and OD Tolerance : Depends on customer requirement.
Brand : Hengtong
3. Size List
72*90 | 75*95 | 76*98 | 86*105 | 86*110 | 95*120 |
95*127 | 106*136 | 127*161 | 127*165 | 134*172 | 139.7*177.8 |
140*172 | 147*185 | 158.75*209.55 | 159*197 | 165*203 | 172*210 |
172*228 | 200*245 | 235*288 | 203*120 | 172*103 | 197*120 |
165*106 |
4.Packaging & Delivery
Packaging Details | in bundle, with plastic caps, anti-rusted oiled, with woven bags. |
5. Our Advantages
a. Extensive Production Experience: We are specialized in honed tubes, skived tubes, cold drawn pipes, 4140 drilling tubes, and chrome bar with an experience of 20 years.
b. Complete Production Facilities: Owning cold drawn machine, skived and roller burnished machine, honing machine, precision centerless grinding machine, straightening machine, fine polishing machine, precision lathe, milling and drilling machine, roller press and other advanced equipments. Our technicians will do regular scheduled maintenance on these machines to guarantee them work well.
c. High Quality Raw Material: We mainly choose raw material from big steel factory, such as AN STEEL, TPCO, BAO STEEL, SHA STEEL, which are best and largest raw material manufacturer in China.
d. Strict Physical/Chemical Testing Procedures: Meeting the requirements of the product design and process, providing reliable testing data.
e. Short Delivery Time: Usually one container 20 days. We also stock some standard-sized tubes and bars.
f. Safe Packing: Anti-Rust oil be spread on tubes and bars before shipping, plastic caps on tube ends to protect inside surface, each bar be protected with cardboard tube.

We usually follow the tenet of customer-oriented, details-focused for 42CrMo 42CrMo4 4140 Steel Pipes and Tubes. We have established close partnerships with local outstanding enterprises and distributors, and our business scope covers many regions of the world. Our vision is to strengthen the awareness of quality service, establish a reputation and high-efficiency brand and improve our team spirit.
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