Our Hydraulic Srb Pipe, Precision Seamless Steel Honing Tube, Cold Drawn Bright Seamless Stator Tube is highly praised by our customers for its high performance, reliability and innovation. Our business philosophy is to create value for customers and provide better development space for employees. We frequently introduce advanced technology from abroad, actively responding to market demand. Welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!
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.

In an effort to finest meet up with client's requirements, all of our operations are strictly performed in line with our motto 'High quality, Competitive Rate, Fast Service' for 4130 / 4140 / 30CrMo4 Alloy Steel Seamless Tube. With the continuous development of the market, so far our company's products are more abundant. Over the years, we rely on the positive and enterprising spirit and the support of the majority of customers and meticulous and strict management, constantly develop and grow.
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