Strut Channel Manufacturers | Planking & Thread Rod Manufacturer Company in Wuxititle> <meta name="keywords" content="Wuxi Hengtong Metal Framing is a Manufacturers of Strut Channel, Planking & Thread rod in China. You can select high quality Strut Channel, Thread Rod & Planking products in best price from certified" /> <meta name="description" content=" Wuxi Hengtong Metal Framing is a Manufacturers of Strut Channel, Planking & Thread rod in China. You can select high quality Strut Channel, Thread Rod & Planking products in best price from certified." /> <link href="/skin/default/css/layout.css" rel="stylesheet" type="text/css" /> <script src="/skin/default/js/jquery-1.7.2.min.js" type="text/javascript"></script> <script src="/skin/default/js/banner.js" type="text/javascript"></script> <script type="text/javascript" src="/skin/default/js/runplay.js"></script> <script type="text/javascript" src="/skin/default/js/jquery.min.js"></script> <script src="/skin/default/js/jquery.SuperSlide.2.1.1.js"></script> <script src="/skin/default/js/home.js"></script> </head> <body> <div class="top"> <div class="head"> <div class="head1"> <p>Welcome to the official website of Wuxi Hengtong Metal Framing System Co.,Ltd.</p> <pp> <a href="/zxly1.html">Messages</a> <span>|</span><a href="http://mail.htstrut.com/">Office</a> <span>|</span><a href="http://www.htstrut.com/">Chinese</a> </pp> </div> </div> <div class="logo"> <div class="logo_bg"> <img class="logo1" src="/skin/default/images/logoen.jpg" /> <img src="/skin/default/images/telen.jpg" class="logo2"/></div> </div> <div class="nav"> <div class="nav_bg"> <ul> <li><a href="/home/">Home</a></li> <li class="li1"><img src="/skin/default/images/line.jpg" /></li> <li><a href="/zjht1.html">About Us</a></li> <li class="li1"><img src="/skin/default/images/line.jpg" /></li> <li><a href="/cpzx1/">Products</a></li> <li class="li1"><img src="/skin/default/images/line.jpg" /></li> <li><a href="/gcal1/">Case</a></li> <li class="li1"><img src="/skin/default/images/line.jpg" /></li> <li><a href="/zxdt1/">News</a></li> <li class="li1"><img src="/skin/default/images/line.jpg" /></li> <li><a href="/zzry1.html">Honor</a></li> <li class="li1"><img src="/skin/default/images/line.jpg" /></li> <li><a href="/dl.html">Download</a></li> <li class="li1"><img src="/skin/default/images/line.jpg" /></li> <li><a href="/zxly1.html">Messages</a></li> <li class="li1"><img src="/skin/default/images/line.jpg" /></li> <li><a href="/lxht1.html">Contact Us</a></li> </ul> </div> </div> </div> <div class="banner"> <div id="bannercom"> <div id="wrap03"> <div id="silder"> <a href="/home/" target="_blank" style="width: 100%; height:320px; display: none; background: url(/skin/default/images/nyban1en.jpg) 50% 0% no-repeat;"></a> <a href="/home/" target="_blank" style="width: 100%; height:320px; display: none; background: url(/skin/default/images/nyban2en.jpg) 50% 0% no-repeat;"></a> <a href="/home/" target="_blank" style="width: 100%; height:320px; display: none; background: url(/skin/default/images/nyban3en.jpg) 50% 0% no-repeat;"></a> <div class="fs_btn"></div> <div class="pre sameStyle" style="opacity: 0.3;"></div> <div class="next sameStyle" style="opacity: 0.3;"></div> </div> </div> </div> </div> <div class="ss"> <div class="ss_left"> <span>Key Words:</span><p>P41 Series Cushion Clamps for O.D.Tubing | Post Base | Angle Fittings | “U”Shape Fittings</p> </div> <div class="ss_right"> <pp>Product Search</pp><form id="searchform" name="searchform" method="post" action="/e/search/index.php" target="_blank" style="float: left;" > <input style="float:left; height:19px; color:#919191;" class="main text" maxlength="70" size="22" type="text" name="keyboard" id="keyboard"onfocus="if(this.value=='you want to search')this.value=''" value="you want to search" /> <input type="hidden" name="show" value="title,smalltext" /> <input type="hidden" name="tempid" value="5"> <input style="float:left;" type="image" value=" Search " src="/skin/default/images/search.jpg" /></form> </div> </div> <div class="ny"> <div class="cpny"> <div class="cpny_left"> <div class="about_left_01"> <p>News</p> </div> <div class="cpny_left_02"> <ul> <li><img src="/skin/default/images/left_dian.jpg" /><a href="/zxdt1/gsdt1/">Company News</a></li> <li><img src="/skin/default/images/left_dian.jpg" /><a href="/zxdt1/hyxw1/">Industry News</a></li> <li><img src="/skin/default/images/left_dian.jpg" /><a href="/zxdt1/cjwt1/">Problem</a></li> </ul> </div> <div class="cpny_left_03"> <img src="/skin/default/images/lxwmen.jpg" /> <p>Address:No 6 East Dingxiang Road，Hudai Industry Zone，Wuxi City<br /> Tel：+86 0510-68783382<br /> 　　　+86 0510-68783383 <br /> 　　　+86 0510-68783391 <br /> Fax：+86 0510-68783390<br /> Zip code: 214161<br /> E-mail:marketing@htstrut.com</p> </div> </div> <div class="cpny_right"> <div class="cpny_right_nav"> <p><a href="/en/">Home</a>> Specification for expansion screws</p> </div> <div class="about_right_01"> <div class="about_right_01_ny"> <p style="text-align: center"><span style="font-size: larger">Specification for expansion screws</span></p> <p>Four: four house lizard aka expansion screws. Expansion bolt is divided into: 50, 45, 60, 70, 80, expansion screws of the material: mainly divided into austenite A2, A1, A</p> <p>Four: four house lizard aka expansion screwsThe expansion bolt is divided into 45 grades: 50, 60, 70,, 80, expansion screws of the material: mainly divided into austenite A2, A1, A4Martensite and ferrite C1, C2, C4,<br /> Its representation method is A2-70,<br /> "-" respectively, before and after the bolt material and strength grade, the following is the complete expansion bolt specification table.</p> <p>(1) the bolt material commonly used materials: Q215, Q235, 25 and 45 steel, for the important or special purpose of threaded connections, can choose 15Cr, 20Cr, 40Cr, 15MnVB, 30CrMrSi and other mechanical properties of high alloy steel.<br /> (2) the allowable stress and load characteristics (static and variable load) and the connection of the allowable stress screw threads are not tight, whether the pre tightening force needs to be controlled and the material, structure size and other factors.<br /> According to the actual situation of the wall selection of different expansion screws. Generally have the following several 6*80, 6*60, 6*120, 6*150.<br /> 6*60: length of 60 mm casing length 45 mm, 8 mm in diameter and wall thickness of 0.7 mm, the surface is color zinc plating; screw length 60 mm, diameter 6 mm, 35 mm, the bottom part of the screw rod hammer 8mm conical surface is zincplatingcolor; octagon, the thickness of the outer diameter of the nut 10 mm 5 mm, the surface is white zinc plated gasket; a diameter of 13 mm, thickness 1mm, diameter 6 mm, white zinc plated surface; the elastic plate is a diameter of 9 mm, 6 mm inner diameter and thickness of 1.6 mm ring.<br /> 6*80: length of 80 mm casing length 65 mm, 8 mm in diameter and wall thickness of 0.7 mm, the surface is color zinc plating; screw, nut, washer, spring.<br /> 6*120: length 120mm, casing length 105mm, diameter of 8 mm and 0.7 mm in wall thickness, the surface is color zinc plating; screw, nut, washer, spring.<br /> 6*150: length 150mm, casing length 135mm, diameter of 8 mm and 0.7 mm in wall thickness, the surface is color zinc plating; screw, nut, washer, spring.</p></div> </div> <div class="cpny_right_02"> <div class="cpny_right_02_01"> <img src="/skin/default/images/newsimgen.jpg" /> </div> <div class="cpny_right_02_02"> <ul> <li><img src="/skin/default/images/jia.jpg" /><a href="/zxdt1/hyxw1/2016-12-09/991.html">Airbus: crack free connection safety</a><span>2016-09-28</span></li> <li><img src="/skin/default/images/jia.jpg" /><a href="/zxdt1/hyxw1/2016-12-09/990.html">Experts interpret A380 wing crack: c</a><span>2016-09-28</span></li> <li><img src="/skin/default/images/jia.jpg" /><a href="/zxdt1/hyxw1/2016-12-09/996.html">Note for installation of plate type </a><span>2016-09-28</span></li> <li><img src="/skin/default/images/jia.jpg" /><a href="/zxdt1/hyxw1/2016-12-09/995.html">Car modification project, fixed poin</a><span>2016-09-28</span></li> <li><img src="/skin/default/images/jia.jpg" /><a href="/zxdt1/hyxw1/2016-12-09/994.html">Bridge engineering knowledge: suppor</a><span>2016-09-28</span></li> <li><img src="/skin/default/images/jia.jpg" /><a href="/zxdt1/hyxw1/2016-12-09/993.html">How to maintain bridge bearings</a><span>2016-09-28</span></li> <li><img src="/skin/default/images/jia.jpg" /><a href="/zxdt1/hyxw1/2016-12-09/992.html">Safety rules for the installation of</a><span>2016-09-28</span></li> <li><img src="/skin/default/images/jia.jpg" /><a href="/zxdt1/hyxw1/2016-12-09/989.html">Ceramic wear resistant pipe for the </a><span>2016-09-28</span></li> <li><img src="/skin/default/images/jia.jpg" /><a href="/zxdt1/hyxw1/2016-12-09/988.html"> The quality of "de" around the wo</a><span>2016-09-28</span></li> <li><img src="/skin/default/images/jia.jpg" /><a href="/zxdt1/hyxw1/2016-12-09/987.html">The industrial and commercial bureau</a><span>2016-09-28</span></li> <li><img src="/skin/default/images/jia.jpg" /><a href="/zxdt1/hyxw1/2016-12-09/986.html">The breakdown of the Outlander ten w</a><span>2016-09-28</span></li> </ul> </div> </div> </div> </div> </div> <div class="foot"> <div class="footer"> <div class="footer_01"> <img src="/skin/default/images/foot_logoen.jpg" /> <ul> <li><a href="/zjht1.html">About Us</a></li> <li>|</li> <li><a href="/cpzx1/">Products</a></li> <li>|</li> <li><a href="/gcal1/">Case</a></li> <li>|</li> <li><a href="/zxdt1/">News</a></li> <li>|</li> <li><a href="/zzry1.html">Honor</a></li> <li>|</li> <li><a href="/zxly1.html">Messages</a></li> <li>|</li> <li><a href="/lxht1.html">Contact Us</a></li> </ul> <p>Links：<a href="http://wxhtdl.1688.com" target="_blank">Alibaba(CN)</a> <a href="http://wxhtdl.en.alibaba.com" target="_blank">Alibaba(International)</a> E-mail:marketing@htstrut.com</p> </div> <div class="footer_02"> <p>Add: No 6 East Dingxiang Road，Hudai Industry Zone，Wuxi City Tel：+86 0510-68783382 68783383 68783391 </p> <p>Page Copyright: Wuxi Hengtong Metal Framing System Co.,Ltd. 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