Sigma is a manufacturer and distributor of ASTM bolting specified by the American Petroleum Institute. Sigma holds an American Petroleum Institute API 20E-0017 Monogram to manufacture API 20E bolting, API 20F-0007 Monogram and is certified API Spec Q1, 9th edition. Sigma Distributes standard bolting and manufactures custom bolts to customer specifications and per print following careful details of the latest revisions.
We are ISO 9001 2015 certified and are on the approved vendor list of major wellhead manufacturers, energy and petrochemical companies worldwide. We promise rapid and knowledgeable response and service. Please contact us with your requirements today.
We are ISO 9001 2015 certified and are on the approved vendor list of major wellhead manufacturers, energy and petrochemical companies worldwide. We promise rapid and knowledgeable response and service. Please contact us with your requirements today.
Services
Products
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PTFE fluoropolymer coated bolts after exposure to corrosive environments can be removed with hand tools. The easy on/easy off properties exhibited by these fasteners provide safe has been demontarted after Salt spray corrosion testing up to 4,000 hours. PTFE fluoropolymer coated fasteners.
Xylan is a fluoropolymer topcoat manufactured by Whitford Corporation, which in the 1014 and 1070 coatings afford high lubricity (co-efficient of friction as low as.02), and corrosion resistance of approximately 1000 hours(ASTM B117) when applied over phosphate, and up to 2000 hours when applied over electroplating.These are solvent based thin film topcoats.
Xylan is a fluoropolymer topcoat manufactured by Whitford Corporation, which in the 1014 and 1070 coatings afford high lubricity (co-efficient of friction as low as.02), and corrosion resistance of approximately 1000 hours(ASTM B117) when applied over phosphate, and up to 2000 hours when applied over electroplating.These are solvent based thin film topcoats.
Custom Bolting
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Sigma manufactures custom bolts and fasteners in inconel 718, 17-4PH, MP35N, hastoloy, ASTM L7M and B7M, B7, L7, ASTM 660, B16, 304 and 316 stainless steel, and other high nickel alloys. We custom specialty fasteners for leading Valve and Pressure Control manufacturers around the world. Sigma Fasteners supplies our customers with the highest quality fasteners and bolts.
Products
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Sigma distributes Bolting to meet industry standards Hex bolts, washers, studs, cap screws, hex nuts, heavy hex nuts, lock nuts, jam nuts, coupling nuts, and slotted nuts in all SAE and ASTM grades. Sigma is your one-stop source for all your bolting needs. We stock a wide array of fasteners in our 35,000+ square foot warehouse and we'll arrange for convenient delivery.
Worldwide
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From the oilfields of the Middle East to the jungles of South America and the frozen tundras of the far north Sigma Fasteners has the experience to deliver your bolts worldwide on time. Sigma has customers in a wide range of countries and is adapt at shipping direct or through freight forwarding companies.
Quality
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The scope of the registration applies to manufacture and distribution of fasteners, coating and plating of customer parts for the oil and gas industries. Sigma also holds an American Petroleum Institute Monogram Licenses to manufacture API 20E BSL 3 & API 20F BSL 3 bolting. Open communication is the condition for recognizing the most important issues and implementing solutions.
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