轴承钢管
轴承钢管是指热轧或冷轧（冷拔）的无缝钢管，供制造普通滚动轴承套圈用。钢管的外径为25-180毫米，壁厚为3.5-20毫米，分普通精度和较高精度两种。轴承钢是用来制造滚珠、滚柱和轴承套圈的钢。轴承在工作是承受着极大的压力和摩擦力，所以要求轴承钢有高而均匀的硬度和耐磨性，以及高的弹性极限。对轴承钢的化学成分的均匀性、非金属夹杂物的含量和分布、碳化物的分布等要求都十分严格，是所有钢铁生产中要求最严格的钢种之一。
中文名 ：轴承钢管              壁    厚 ：3.5-20毫米

外   径： 25-180毫米           牌    号 ：GCr6， GCr9（SiMn）,gcr15

产品名称：冷拔无缝管、精密无缝管、大口径精密钢管
冷拔精密管,冷拔无缝钢管，各种材质精密钢管——开安管业
一、精密钢管：精密钢管是一种通过冷拔或热轧处理后的一种高精密的钢管材料。由于精密钢管内外壁无氧化层、承受高压无泄漏、高精度、高光洁度、冷弯不变形、扩口、压扁无裂缝等优点，所以主要用来生产气动或液压 元件的产品，如气缸或油缸，可以是无缝管，也有焊接管。
主要生产钢管牌号：10、20、35、45 、40cr、gcr15、42crmo等
经协商，也可供应其它牌号的精密无缝钢管。
国家标准：
精密钢管的国家标准;GB/T699-2008，精密钢管的国家标准;GB/T3639-2008，另外可能也还有应用GB/T8162-2008结构用精密钢管的。
精密钢管欧标为：DIN2391
基本用途：
精密钢管广泛用于汽车、摩托车、电动车、石化、电力、船只、航天、轴承、气动元件、中低压锅炉等范畴，也可适用于钢筋套筒、轴承、液压、机械加工等领域！
二、冷拔无缝管：冷拔钢管用拉拔、挤压、穿孔等方法生产的整根钢管表面没有接缝的钢管。是一种具有中空截面、周边没有接缝的圆形，方形，矩形钢材。是用钢锭或实心管坯经穿孔制成毛管，然后经冷拨制成。
山东开安管业，拥有LG20精轧机六台，LG30精轧机两台，LG50精轧机两台，LG60精轧机一台，LG150精扎机一台及大型液压机。可为用户定做10#、20#、 35#、45#、16Mn、20Cr、40Cr、Gcr15…等各种材质的冷拔无缝管，精密钢管、精密光亮管、非标无缝钢管，专业生产钢筋连接套筒钢管、承接高精密钢管加工，价格低，量大优惠。应客户要求并配有13米酸洗、磷化、皂化池数个.对外酸洗钝化无缝钢管。服务周到，质量好交货快。  
执行标准：GB3639-2000  
规格：外径10-245mm壁厚08-70mm  

Shandong Kaian Pipe Industry Co., Ltd. is a large-scale enterprise that produces and sells seamless steel pipes, thick-walled seamless pipes, precision steel pipes, straight seam steel pipes, hot-dip galvanized steel pipes, plastic-coated steel pipes, round steels and alloy steel plates. Seamless Steel Tube Plant, Tianjin Big Seamless Steel Tube Plant, Baotou Steel Tube Plant, Chengdu Seamless Steel Tube Plant, Metallurgical Seamless Steel Tube Plant Group, Baosteel Pipe Plant) and other excellent steel pipe factories, the above corporate legal persons are shareholders Form partner. Since its inception, we have been adhering to the business policy of “survive by quality, develop by product, cooperate with credit, and win customers with service”. Under the guidance of this business policy, the company sells and distributes as a general agent all the year round. : Tianjin Seamless Steel Tube Plant, Chengdu Pangang, Baotou Steel, Metallurgical Steel, Baosteel, Anshan Iron and Steel and other major steel mills seamless pipe, stainless steel seamless steel pipe and alloy pipe. The company has a modern large open-air library and indoor library, prepared There are more than 27,000 tons in stock. The company has advanced cold-drawn seamless pipe production equipment, and high-tech employees, can customize cold-drawn seamless steel tubes of various specifications and materials. Our products are of good quality and high precision. , small tolerances, prompt delivery, welcome to order. The materials are: 10#, 20#, 45#, 16Mn, 20Cr, 40Cr, 15CrMo, 35CrMo, and the like. The implementation standards are: GB/T3639-2009 Uses: It can be used for mechanical structures, hydraulic equipment, cylinders, rollers, parts processing, automotive (motorcycle) parts, diamond thin-walled drill bits. Production range and tolerance: 10-203*1-28mm tolerance 2-10 wire

Product features: The company's cold drawn seamless precision tube, cold drawn seamless precision steel pipe without pitting, scratches, cracks, bumps and other appearance defects, the inner and outer surface is bright, the precision is much larger than the ordinary cold drawn tube, the minimum tolerance 2 silk. Therefore, it is often used in areas where high precision and finish are required to improve product quality and reduce processing costs.

The company's main products: domestic high-pressure alloy tubes, materials: A335P11, P91, P92, 15CrMoG, 12Cr1MoVG, 1Cr5Mo, Cr5Mo, Cr9Mo, 0Cr9Mo, 15CrMo, 35CrMo, 12Cr1MoV, 10CrMo910, A335P91, 1Cr2Mo, 15MnV, 37Mn5, 10Cr9Mo1VNb, 15NiCuMoNb5, 12Cr2MoWVTiB, WB36, SA106B, ST45.8-III, etc.; General carbon high-pressure boiler tube GB5310-2008 Material: 20G, 20MG, 25MG, 15MoG, 20MoG, fertilizer special tube GB6479-2000 Material: 10, 20G, Q345 , Q390, 10MoVNb, 12CrMo, 15CrMo, 12Cr2Mo, petroleum cracking pipe GB9948-2013 material: 10, 20, 12CrMo, 15CrMo, 1Cr2Mo, 1Cr5Mo; hydraulic support pipe GB/T17398-1998 material: 27SiMn, structural pipe GB/T8162-2008 materials are: 10, 20, 35, 45, 40Mn2, 45Mn2, 27SiMn, 20Cr, 40Cr, 20CrMo, 35crMo, 38CrMoAl, 50CrV, 30CrMnSi; transport liquid pipe GB/T8163-2008 material: 10, 20, Q295, Q345; oil well tubing, coupling material tube APISPEC5CT material: J55, N80 and so on.