Drilling Steel Pipes/Drilling Steel Pipe are produced by Seamless Cold Drawn Method, with steel grade of 4140, 30CrMonSiA, 37Mn5, 45MnMoB etc.
Heat Treatment is: Q+T
Including parts of:
Wire-Line Drill Rods
Core Barrel Tubes,
Casing and Couplings
Drill Rods, inner and outer tubes of the core barrel are main components of the wireline core drilling facilities, which is used in the mining and geological explorations.
Our Steel Tubes are used in Wireline Core Drilling systens to collect mineral samples from dept of undergound 3000meters, the quality is accepted and approved by our customers who are producing Wireline Core Drilling Facilities.
Surface treatment: Pickling, Phosphating and Passivating
Drilling Steel Pipes Drilling Steel Pipes,Carbon Steel Drilling Pipes,Mining Drilling Pipe,Oil Drill Pipe,Oval Torich International Co.,Ltd--The Steel Tube Maker , http://www.chinasteeltubepipe.com
1. Milling bed, drilling machine product quality national supervision and spot check results This time, 38 kinds of 38 enterprises produced in Liaoning, Jilin, Heilongjiang, Shanghai, Jiangsu, Zhejiang, Anhui, Fujian, Jiangxi, Shandong and Guangxi, 11 provinces, autonomous regions and municipalities directly under the Central Government Milling and drilling machine products were supervised and spot-checked. The spot check is based on GB15760-2004 "General Technical Requirements for Safety of Metal Cutting Machine Tools" and GB5226.1-2002 "Mechanical Safety Mechanical Electrical Equipment Part 1: General Technical Conditions" and other standards, leakage and geometric accuracy of milling machine and drilling machine products. , winding and entangling hazard, limit device, mechanical overload protection, anti-loose device, interlock device, clamping device, guard device, start, stop, emergency stop, noise, splash, motion reliability, power switch, protective ground 22 safety and important performance items such as insulation test, circuit overcurrent protection, motor overload protection, electric shock protection and control transformer were tested. Seven products were unqualified in the spot check, and the main quality problems were:
1 There are 4 kinds of products whose geometric accuracy is unqualified, which will affect the processing performance of the machine tool. 2 There are 2 kinds of products that are entangled and involved in dangerous items. In some products, the handwheel of the longitudinal feed axis does not adopt the automatic disengagement device when maneuvering, and the handwheels at both ends are in high-speed rotation state, which is prone to danger; some longitudinal radial arm drilling products are not closed in the longitudinal transmission shaft. There is a risk of entanglement during work. 3 There is one type of product that is not covered by electric shock protection. The dangerous voltage metal terminal in the electric cabinet is bare, and there is no protective partition and electric shock warning sign. 4 There is a product emergency stop device that does not meet the safety requirements, the mushroom button does not have self-locking and manual unlocking functions. 5 If there is a product whose power switch is unqualified, the switch does not lock the mechanism in the disconnected position, and it is prone to illegal operation. 6 There are 2 kinds of products to control the transformer failure, mainly for the transformer does not provide appropriate protection.
2. National Supervision and Inspection Results of Grinding Wheel Product Quality This year, we conducted supervision and spot checks on 200 kinds of grinding wheel products produced by 197 enterprises in 11 provinces including Hebei, Liaoning, Jiangsu, Zhejiang, Anhui, Fujian, Jiangxi, Shandong, Henan, Hubei and Guangdong. . The spot check is based on the mandatory national standard GB2494-2003 "General Abrasives Safety Rules", the recommended national standard GB/T2485-2008 "Consolidated Abrasives Technical Conditions" and the industry standard JB/T6353-2006 "Consolidated Abrasives and Rubber sheet grinding wheel, JB/T3715-2006 "Consolidation grinding wheel grinding wheel", JB4175-2006 "Consolidated abrasive fiber reinforced resin cutting wheel" and other standards, appearance defects, dimensions of the grinding wheel product, Seven items including shape and position tolerance, hardness, static imbalance, swing test and sign were tested. In the spot check, 30 products were found to be unqualified, and the main quality problems existed:
1 The fixed abrasive fiber reinforced resin cutting wheel rotating project produced by a factory was unqualified. The 10 pieces of fiber reinforced resin cutting wheel that were inspected all showed turning and breaking when the requirements of the inspection speed were not met, which was a serious quality problem. 2 There are 17 types of grinding wheel for grinding, fiber reinforced resin cutting wheel, ceramic flat grinding wheel and resin flat grinding wheel. Large or small diameters of the grinding wheel can cause the grinding wheel to rupture during use. 3 There are 4 kinds of ceramic flat grinding wheel products with unqualified hardness.
Second, the quality of enterprise products must be strictly managed. Not long ago, the Minister of Industry and Information Technology Li Yizhong said at the 16th China Quality Forum: "Strengthening product quality is an important measure to promote industrial economic development. The Party Central Committee and the State Council attached great importance to product quality work. On November 11, last year, General Secretary Hu Jintao made a lengthy remark on the quality issue, emphasizing that strengthening product quality is not only to meet the current needs of the international financial crisis, but also to adjust the industrial structure and transform the development mode. To improve China's international competitiveness, a long-term strategic task must conscientiously implement relevant laws and regulations, persevere, strict management, and constantly unremitting."
Although the state's supervision and inspection results on the product quality of the machine tool industry only check the quality problems of some enterprise products, it also reflects from one aspect that although the overall quality level of the industry is constantly improving, there are still many product quality problems, and some even There are serious quality problems with the product. Therefore, we must enhance the quality awareness, strengthen the main responsibility of the enterprise, and profoundly understand that quality is the life and reputation of the enterprise, and it is the concentrated expression of market competitiveness.
The quality construction of an enterprise should focus on the quality of the varieties, and establish a full-person, whole-process, all-round quality management system and quality credit system. In order to grasp the development of varieties, we should do a good job in market segmentation, find the right position, and produce products that meet market demand and marketability. To improve the quality of products, it is necessary to improve the safety, reliability and practicability of products by improving the physical quality of products. To grasp the brand building, we must strive to create high-quality brands and brand-name products, and enhance the social recognition of the brand. To improve service, we must be responsible to the users, and do a good job in pre-sales, after-sales service and sincere performance.
As 2009 is about to pass, our machine tool industry enterprises should continue to implement the decision-making arrangements of the Party Central Committee and the State Council on improving product quality on the basis of earnestly summarizing the quality construction work of the past year, and focus on the production capacity and growth of the enterprise from the past. The rate has shifted to the quality, efficiency and sustainability of production growth, to optimize product structure, improve independent innovation capability and strengthen product quality construction, and upgrade the quality of industry products to a new level.
I. Recent product quality and national supervision and spot checks The National Product Quality Supervision, Inspection and Quarantine Bureau of Product Quality Supervision issued a batch of product quality national supervision and spot check results on October 20, 2009. The products involved in the machine tool industry are mainly: