According to reliability theory of probability, the probability value of different grade of seismic hazard of water pipe buried underground under earthquake action was calculated.
根据概率可靠性理论，计算了地震作用下地下直埋管道的各个震害等级的概率值。
During the manufacturing of SSAW pipe for Sudan pipeline, J557 electrode shall be applied as bottom weld materials according to the matched requirement of grade and strength.
在苏丹管线用螺旋埋弧焊管生产过程中，根据钢级及强度匹配要求，选用J557焊条作为打底焊材料。
The grade X65 pipeline steel used for LSAW submarine line pipe has been developed at Baosteel, which is produced by hot continuum rolling processing.
宝钢开发以热连轧方式生产用于制造直缝埋弧焊管的海底管线用x 65级管线钢板，其产品具有高强度、高韧性和良好的焊接性等综合性能。
Check the dimensions of dug pipe channel, especially the grade level, inclination against design requirements, check to see whether the bedding is rammed hard enough.
检测开挖的管槽尺寸，特别是水平高程、斜度是否满足设计要求，垫层是否夯实。
The results of batch manufacture grade X80 spiral and longitudinal submerged arc welded pipe all meet the pipe technical conations required by"Grade X80 Pipeline Steel Pipe Application Project";
X80钢螺旋缝和直缝埋弧焊管的批量试制结果全部符合“X80级管线钢管应用工程”钢管技术条件的要求；
Standard construction includes the discharge pipe extending through the support plate above grade.
标准构造包括穿过支撑板的排水管。
Compactness from 600 mm above the pipe to surface grade shall be at least equal to surrounding soil.
从管道上部600毫米高度处到地面标高之间的回填土的压实程度应至少同周围的土质相同。
Extrusion roller, drive roller, guide rollers are wrapped by high grade seamless steel pipe and wear-resistant rubber (NBR).
挤压辊、传动辊、导辊为优质无缝钢管外包优质耐磨橡胶(丁晴胶)。
Then the strain aging behavior of X80 grade LSAW pipe body was conducted a test simulation and the result coincide with the former analysis.
对X80钢级直缝埋弧焊管管体的应变时效行为进行了试验模拟，结果与分析相吻合。
High Strength bolts: all kinds of grade 10.9 and 12.9 high strength hex and hex socket screws, bolts, sleeves, pipe plugs, shoulder screws, stainless steel hex socket bolts, set screws.
高强度螺栓类：库存各种规格的10.9级、12.9级高强度内外六角螺丝、螺栓、套筒、喉塞、塞打、不锈钢内六角螺栓、刀把螺丝、机米。
To introduce the process of wire drawing process, chemical Cu-plating process and formulation of top grade submerged-arc welding wire for pipe line steel.
介绍管线钢用高等级埋弧焊丝拉丝工艺、化学镀铜工艺及配方。
In the paper, a new method of pipe networks analysis using a nodal energy grade method is developed.
本文提出了配水管网水力计算中的节点水头法。
First selection of grade X80 pipeline is suggested on large size high pressure gas transmission pipe in the future.
建议在未来大口径高压输气管线中优先选用X80级管线钢管。
After the water quenching of the drill pipe steel grade, the cooling method of drill pipe welds is changed to the quick water cooling instead of the previous high-pressure air cooling.
钻杆钢种水淬化后，焊缝热处理的冷却方式由以前的高压空气冷却转变为快速水冷却。
When picking up drill pipe, visually check each joint of pipe picked up to be sure it is in proper sequence according to weight, grade and class as designed.
串接钻具时，要按照设计逐根检查，以便确认每个单根的重量、钢级和下井顺序正确无误。
When picking up drill pipe, visually check each joint of pipe picked up to be sure it is in proper sequence according to weight, grade and class as designed.
串接钻具时，要按照设计逐根检查，以便确认每个单根的重量、钢级和下井顺序正确无误。
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