details about UPVC, PB and PPR pipes?
491111
Unplasticised Polyvinyl Chloride\nPolymer Type \nThermoplastic\nAdvantages \nCheap, good acid and alkali resistance.  Flame-retardant.  Stiff and strong.  Can be transparent.  Good vapour barrier properties.  Good UV resistance.\n Disadvantages \nDifficult to melt process, requires modification.  Limited solvent stress cracking resistance.  Becomes brittle at (c 5°C (40°F) ) unless impact modified.  Low continuous service temperature of 50°C (120°F).\n \nPB--Polybutylene\nIt is a certified and acceptable material--but, there are class-action lawsuits b/c it leaks under certain circumstances.\n\nPPR--Polypropylene\nPPR pipe was promoted and recommended by China Construction Material Bureau and the people of PPR industry last year, and quickly PPR pipe take over the market of PAP composite pipe and occupy about 60% of total plastic pipe market in China because of the advantages :\n\n1. PPR pipe's installation is same as steel pipe, local construction designers get used to it.\n\n2. PPR pipe don't need fitting. Many accidents of PAP composite pipe (also PEX pipe) is caused by the broken between copper fitting and pipe before, leave bad impression on China Construction industry. \n\nPPR compound is made by 90-95% PP, 5% Ethylene and other additives, is compounded by the twin-screw extruder, the compounding temperature is close to Sioplas compounding. According to the specification released by China Construction Material Bureau, PPR pipe with 3.5mm diameter can pass the testing under 1000 hours, 95 C and 3.5Mpa. For the same requirement, PEX pipe only need 2.7mm diameter. Now flooring-heating pipe become popular in northeast China and will expand to northwest China soon.
277536
You're best bet is to contact the resin manufacturers.  When you get the operator just tell them you have a technical question regarding (whatever you want) and they'll transfer you immediately....for some reason most people wig out when they hear the word "technical."  Try Geon, Solvay, Vinnolit, Vinycel, Kaneka, Mitsubishi, or Formosa to name a few.  You might also have luck with PVC compounders such as PolyOne or Marchem.  Otherwise, you could by some books devoted to the subject - The Encyclopedia of PVC Vols 1-4 is an excellent resource.  However, unless you have a few hundred bucks at your disposal I don't reccomend this.  Good luck!
384170
These won't affect the integrety of the pipe. They are from the machine which extruded the metal into the shape of a pipe.\n\nThe rating characteristics: PSI, material make up, corrosion protection added, and ID are all met.\n\nA Pipe is made to a standard which must be assured by the manufacturer for the specific application intended. Testing on a periodic basis with a certificate of compliance is usually issued.
258508
Trey is correct, however I just ran into some red tape with two 20,000 gallon diesels in southern KY. My customer was really pushing to get these things out of the ground.. Fast! As it ends up, several states have a set time frame on how long a (ust) underground storage tank can sit empty. Your state fire marshel would be the best place to start.  If they dont over see this, ask them for a contact w/ the state EPA or the UST branch.  MAKE SURE YOU USE CERTIFIED COMPANIES.... THIS IS THE EPA WE'RE TALKING ABOUT! \n\nTOTAL BILL FOR TWO 20'S  W/ 3RD PARTY ENVIRO. CONSULTANT WAS AROUND 35 G'S
590447
http://bulkpharm.mallinckrodt.com/_attachments/msds/S5066.htm
268082
You can find some about it here :-)\n\nhttp://joe.lindsay.net/bgp.html
527913
New Study on the Corrosive Effects of Water in Supply Pipes\n\nAssessment of Leakage Leakage reduction cases with a link to "A Practical Approach to Developing a Sustainable Water Loss Reduction Strategy in Sandakan, Sabah, Malaysia"\n\nReduction of NRW \nLosses by Using an \nintegrated WLM and \nWPM System
565548
Right here:\n\nhttp://www.phila.gov/li/codes/PlumbingCode.pdf\n\nHappy reading.
353521
Here's the website.\nhttp://www.puc.state.tx.us/ocp/assist/lowincasst.cfm
747804
There are multiple units usable.  Try pascals, psi, torr, atm
151509
http://www.ncsu-engineering-resources.com/store/trans/productListingRpt.asp?CatID=15\n\nTry these modules.
156148
The following link has some information about PLCs as well as external links for additional information:\n\nhttp://www.htservices.com/Tools/PLC/index.htm
478632
http://www.bccresearch.com/advmat/GB212R.html
492655
check this site\nhttp://www.taltech.com/TALtech_web/resources/intro_to_bc/bcpwork.htm
1038988
You need to look up ASTM A120. That is the standard for galvanized pipe.
248113
They don't say what they are because you are suppose to get a copy of B31.9 and follow its requirements. \n\nB31.9 can change from time to time and this way the specification is always current. If the specification spelled out B31.9 and then quoted the requirements and they had changed in the mean time there would be a conflict.\n\nI have written many specifications for piping and this is the only way to be sure B31.9 or other industry standards are met.
335646
this website will help\n\nwww.pbreview.com