Facing the market demand of different customers at home and abroad, we combine the experience of the same trade, constantly push the old and bring forth the new and perfectly realize the upgrading of series 100T Movable Rotators, 1020 Cold Drawn Pipe, St52.3 Honed Tube. Our company is based on the evaluation of contract bidding documents to ensure the effective implementation of the quality assurance certificate. We believe that every good service can not only enhance our own strength, win the trust and support of owners, but also effectively enhance the brand awareness and reputation of our company.
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 will continue to meet the different needs of customers, with Steel Tube 4140 Seamless Carbon Structural Steel Tube specifications, standards to ensure product quality. With high-performance production equipment, strict quality management strategies and quality control methods, we can quickly provide customers with high-quality, low-cost, outstanding products. Quality First, and Customer Supreme is our guideline to provide the best service to our customers.
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