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Legal Status of Firm
Private Limited Company
Korrekt Engineering Technology Private Limited - Service Provider of studs & fastener, c & c3 nut & coupling in Pune, Maharashtra.
This product is specially designed to compliment and extend but not to conflict with API Spec 6A. Recommendation of this product establishes definite dimensions for Stud bolts and Tap end studs for use with API Spec 6A flanges/studded flange connections and provides for dimensionally inter-changeable stud bolts and tap end studs for API Spec 6A flanges/studded flange connections. Stud bolts and tap end studs that may have other lengths etc. for special purpose, and comply with the requirements of API Spec 6A,are beyond the scope of this document.
The "Grade C" Heavy Hex Structural Nut is recommended for plain (non-galvanized) ASTM A-325 High Strength Structural Bolts. A "Grade C" Nut is not sufficient for galvanized A-325 Bolts since the over tapping of the nut threads required to accommodate the thickness of the zinc coating also reduces the strength of the nut. "Grade C" Nuts are made out of carbon steel and generally achieve their mechanical properties without heat treatment.
The "Grade C3" Nuts are made with weathering steel (alloy steel with additions of copper, nickel and chromium) to match up with ASTM A-325 Type-III Bolts.
This International Standard specifies the technical delivery conditions for steel pipes (casing, tubing, plain-end casing liners and pup joints), coupling stock and accessories and establishes requirements for three Product Specification Levels (PSL-1, PSL-2, PSL-3). The requirements for PSL-1 are the basis of this International Standard. The requirements that define different levels of standard technical requirements for PSL-2 and PSL-3, for all Grades except H-40 and L-80 9Cr, are contained in Annex H.
For pipes covered by this International Standard, the sizes, masses and wall thicknesses as well as grades and applicable end-finishes are listed in Tables C.1 to C.3 and Tables E.1 to E.3.
By agreement between the purchaser and manufacturer, this International Standard can also be applied to other plain-end pipe sizes and wall thicknesses.
This International Standard is applicable to the following connections in accordance with API Spec 5B:
• short round thread casing (STC);
• long round thread casing (LC);
• buttress thread casing (BC);
• extreme-line casing (XC)
• non-upset tubing (NU);
• external upset tubing (EU);
• integral joint tubing (IJ);
For such connections, this International Standard specifies the technical delivery conditions for couplings and thread protection. Supplementary requirements that may optionally be agreed for enhanced lead resistance connections are given in Annex A.11 (SR22).
This International Standard can also be applied to tubulars with connections not covered by ISO/API standards.
The four groups of products to which this International Standard is applicable include the following grades of pipe:
• Group 1: All casing and tubing in Grades H, J, K and N;
• Group 2: All casing and tubing in Grades C, L, M and T;
• Group 3: All casing and tubing in Grade P;
• Group 4: All casing in Grade Q.
Casing sizes larger than Label 1: 4-1/2 but smaller than Label 1: 10-3/4 may be specified by the purchaser to be used in tubing service, see Tables C.1, C.24, C.30 and C.31 or Tables E.1, E.24, E.30 and E.31.
Supplementary requirements that may optionally be agreed between purchaser and manufacturer for non-destructive examination, coupling blanks, upset casing, electric-welded casing, impact testing, seal ring couplings and certificates are given in Annex A.
This International Standard is not applicable to threading requirements. .
Alumina work at 1100 centigrade degree, apply for aluminium foundry. Zirconia work at 1700 centigrade degree, apply for steel, stainless steel foundry. Silicon carbide work at 1500 centigrade degree, apply for iron, copper, copper alloy foundry. Fused Zriconia-Alumina work at 1600 centigrade degree, apply for some steel which have lower tem.
The "Grade DH" Heavy Hex Structural Nut is recommended for ASTM A-490 Structural Bolts (150,000 psi minimum tensile strength structural bolts, available only in plain finish) and for galvanized ASTM A-325 Bolts. Galvanized DH Nuts are lubricated to minimize galling. The lubricant contains a colored dye to provide an obvious contrast with a plain zinc galvanized nut. "Grade DH" Nuts are made from medium carbon steel and must be quenched and temper heat treated.
Grade DH3" Nuts are made from weathering steel (alloy steel with additions of copper, nickel and chromium) and are also heat treated.
The ASTM A-194 "Grade 2H" Heavy Hex Nut is designed to be used with bolts in high-pressure and high-temperature service. The ASTM A-194 specification is under the jurisdiction of ASTM Committee A-1(Subcommittee on Valves, Fittings, Bolting, and flanges for High and Sub-atmospheric temperature), as opposed to ASTM A-563, which is covered by ASTM Committee F-16 (Fasteners).The ASTM A-194 specification was not meant for normal structural bolting; however, since the mechanical properties of the 2H Nut are essentially the same as the ASTM A-563 Grade DH Nut, they are frequently substituted for a grade DH Nut.
The ASTM A-563M "Class 10S" Heavy Hex Nut is recommended for zinc-coated ASTM A-325M high strength structural bolts.While the "class 8S" Nut is recommended for plain A-325M Bolts, the "Class 10S" Nut can be substituted with the approval of the customer.The properties are similar to an ASTM A-563 Grade DH Heavy Hex Nut. "Class 10S" Nuts are made from medium carbon steel and must be quenched and temper heat treated.
Hans Print is a professionally managed leading printing machines manufacturer and exporter in India. The company has achieved a remarkable progress in the market of its kind. The infrastructure at Hans Print is blessed with complete in house manufacturing of all components under one roof. Hans Print has made a place for itself with quality machines and latest technology maintaining pin-point accuracy desired in printing industry assisted with prompt after-sales-service.
Our web offset printing presses and Sheet Fed Offset Printing Machines are best applicable for printing newspapers printing, tabloids printing, books printing, magazines, catalogue printing, telephone directories and other printing requirements.
From a 2D conceptual sketch or even with just a picture, we are able to create a 3D design model and do the necessary strength calculations. We will then provide you with the necessary part and assembly drawings with complete dimensions and tolerances and also with the necessary Bill of Material (BOM) or cut lists for fabrication.
Computational fluid dynamics (CFD) is one of the branches of fluid mechanics that uses numerical methods and alogorithms to solve and analyze problems that involve fluid flows. Computer are used to perform the millions of calculations required to simulate the interaction of fluids and gases with the complex surfaces used in engineering.
We use CFD to study turbulent or stagnant areas in a system and also to predict things like trajectory flow, mass flow rate etc.
Korrekt Engineering Technology Private Limited
250/1 Saraswati Sadan Shaniwar Peth Opp. Sneha Sadan, Shaniwar Peth,
Pune-411030, Maharashtra, India