The equivalent stress nephograms, the variation rule of pipe displacement and stress on the bellow pipe under expansion were obtained. It was found that the stress and strain of the pipe were symmetrically distributed over the geometric shape of the pipe,the equivalent stresses and equivalent strains at different points of the pipe varied with the curvature radius.

模擬了井眼中波紋管的膨脹變形欧美视频在线视频免费观看免费观看免费，得到了波紋管施工加壓膨脹和井壁接觸過程中的等效應力分布云圖在线免费视频91、波紋管的位移、應力變化規(guī)律91超碰永久地址，以及波紋管膨脹后和井壁的接觸狀況黄色网站进口免费。

The experimental and analytical results show that the axial rigidity of the corrugated pipe is 23.0 percent of the bare pipe with the same thickness and diameter,and the thermal compensation performance of the former is 2.27 times the latter's under equal-stress condition.By using corrugated pipe bundle instead of the bare pipe bundle with the same stiffness as its tube sheet,the axial thermal compensation can be increased by 40.4 percent,and the corresponding pulling-out force is 53.2 percent of that of the bare pipe bundle.

研究結果表明，波節(jié)換熱管單管的剛度為相應光管的23.4%wwwcao；在最大應力相同的條件下欧美激情一区二区三区高清视频在线观看，波節(jié)換熱管的軸向熱補償量為相應光管的2.27倍；在光管管束與殼體等剛度條件下日韩美女A片，用波節(jié)管管束代替光管管束蜜臀亚洲精品国产AⅤ综合第一，軸向熱補償量可提高40.4%，相應的拉脫力為光管管束的53.2%在线观看国产美女精品。

In general, the working pressure of steam is not more than 0.8 Mpa and the temperature of air will be below 150℃. The wing radiator consists of three rows of paratactic screw wing pipe mainly. The paratactic screw wing pipe is made through winding 05*10mm of steel belt onto 18mm steel pipe and then zinc hot galvanized. It can also be made with full stainless steel pipe and belt. Model SRL radiator is made of steel pipe and aluminum belt through rolling. Its radiation area in unit length is more than Model SRZ.

翅片式散熱器主要由空氣流向間的三排并列螺旋翅片管束組成亚洲精选无码精品，SRZ型散熱翅片管束的加工工藝是反0.5*10毫米的鋼帶用機械繞片方法，繞在18毫米無縫鋼管上色七七国产精品，然后進行熱鍍鋅精品国产一区二区亚洲人成毛片，也可用不銹鋼管及不銹鋼帶制成全不銹鋼散熱器，SRL型散熱器則是用鋼管和鋁帶軋制的翅片散熱器97人人操网站，其單位長度的散熱面積比SRZ型的更大办公室丝袜激情无码播放黄色工厂。

Seamless steel pipe unit: The steel pipe straightening machine, the puncher, the company roll over the unit, the company tube rolling train, two roller cold tube rolling trains, the cold-drawing machine, three roller tube unit, five roller cold tube rolling trains, the cyclical tube rolling train, the automatic tube rolling train, the top pipe unit, the steel pipe extrusion unit, the tensity reduce processing process units and so on the diameter machine and so on each kind of steel pipe finishing equipment and so on...

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Production of intellectual property rights have an independent national patent products - Bergen plates lined with plastic pipe embedded tendons, Bergen licensing stainless steel double-layer steel-lined metal tube, Bergen tendons embedded double-sided plates lined with plastic pipe, condensation-type lined with plastic pipe, steel mesh skeleton reinforced plastic composite pipe, high pressure bi-metallic tubes, thin-walled stainless steel pipes, galvanized pipes are an alternative to traditional ideals of environmental protection pipe.

公司生產擁有獨立知識產權的國家專利產品--貝根牌內筋嵌入式襯塑鋼管免费A级毛片中文字幕、貝根牌鋼襯不銹鋼管雙層金屬管国在线se视频、貝根牌內筋嵌入式雙面襯塑鋼管、縮合式襯塑鋼管丁香五月婷婷激情五月天、鋼絲網骨架增強塑料復合管999黄色com、高壓雙金屬管、薄壁不銹鋼管自拍日韩在线视频，是替代傳統(tǒng)鍍鋅管的理想環(huán)保管材www.激情小说。

Is one: the petrochemical, chemical, metallurgical, mechanical, electrical, pharmaceutical, light industry and the nuclear industry and other professional services industries, the production of material specifications, heat-resistant steel, resistance Steel mill heat-resistant alloy steel, rare earth wear-resistant steel, high-pressure high-temperature nickel chromium alloy steel: Steel Casting products, high temperatures centrifugal cast pipe casting, centrifugal cast pipe (casting thickness: 5 mm ---- 60mm, outside Drive: 50 mm ---- 1600mm, single-tube products such as super-6 m diameter size of the cast pipe products) tube, cracking furnace tube, and into the furnace, the furnace tube radiation, radiation control, the loser of the ash, the reaction of various Furnace roll, roll bottom, the furnace roll, sank roll, roll stability, and various types of precision casting fixture, heat-resistant steel castings, and Steel Plant for Hot Piercing Plug casting, casting industrial furnace, heat treatment furnace industrial castings , Heat-resistant castings, wear-resistant steel castings, various types of chemical process pumps, plastic alloy centrifugal pump fluoride, fluoride alloy pump, stainless steel pumps, valves, pipe, steel-lined composite of various pieces, all kinds of PTFE Plastic pipe, fin tube heat exchanger, paper, chemicals, light industrial and textile enterprises such as air-conditioning GL Ⅱ type, U-radiators, welding a variety of stainless steel, alloy steel, carbon steel, high-frequency finned tube , Studded tube, sawtooth-shaped fin, and other products of the manufacturing enterprises.

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The results show that the porous pipe quantity, head loss and hydraulic deviation rate of the porous pipe would increase while water head in entrance, pipe length and porous pipe permeability increasing. The head loss mainly concentrated on the top half of the porous pipe.

結果表明热久久精品日本一区二区三区，隨著進水口壓力、管長和微孔滲灌管透水性能的增加国产交换3p国产精品，微孔滲灌管水流量一级黄色视频舔的视频免费看、沿程的水頭損失和水力偏差率增大，且水頭損失主要發(fā)生在微孔滲灌管靠近進水口的前半段黄色真人免费网站。

Installation technology and application of the long-distance grp sand pipe;2. drainage pipe and field test of GRP sand pipe construction technology, we draw the conclusion that GRP pipe is applicable for drainage pipe of port engineering.

通過對玻璃鋼夾砂管與鋼筋混凝土排水管的綜合性能比較及對玻璃鋼夾砂管施工工藝的現(xiàn)場測試在线二区三区国产免费看污，得出&玻璃鋼夾砂管完全適用于港口工程的排水管道&的結論。

The device includes a drill spigot inserting into the marebase sand layer through the upper cover soil layer, there sets air inlet, sand discharging pipe and vibration connecting pipe in the drill spigot; there sets a sand absorption head on the bottom of the air inlet and sand discharging pipe; the bottom of the vibration connecting pipe connects with the vibration head; the sand absorption head is made up of a centre cavity, ring cavity and sand absorption pipe.

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This article introduces joint type of copper-aluminum pipe,including straight pipe butted joint,flared pipe insert joint,reducing pipe insert joint and reducing pipe lap joint,and the welding technologies in domestic and abroad,including friction welding,energy storage welding,flash welding,resistance welding,braze welding,cold butt welding and ultrasonic welding.

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