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Etid doub bout ASTM A193 B7M nou yo fabrike ak asye alyaj Cr-Mo epi yo trete tèmikman pou satisfè kondisyon striyan NACE MR0175 / MR0103 pou sèvis as (H₂S). Chak etid pè avèk yon ekrou egzagonal lou A194 grade 2HM, ki fèt espesyalman pou reziste kont fann ann aside (SSC) nan anviwònman asid.

Konbinezon sa a se espesifikasyon estanda pou boulon nan rafineri lwil ak gaz, izin pwosesis chimik, ak aplikasyon veso presyon wo tanperati kote boulon estanda B7 / 2H pa otorize akòz limit dite.

Estanda: ASTM A193/A193M, ASTM A194/A194M, ASME B18.2.2

Materyèl: A193 Gr. B7M (etid) + A194 Gr. 2HM (ekrou)

Kalite: Etid doub bout, etid konplètman fil, ekrou egzagonal lou

Fil: UNC, 8UN, Grade 2A (etid) / 2B (ekrou)

Ranje Gwosè: Enperyal 1/4" – 4" | Metrik M6 – M100

Ranje Tanperati: -29°C a 538°C (-20°F a 1000°F)

Rezistans SSC: Wi - konfòm ak NACE MR0175 / MR0103

C: 0.38–0.48 | Mn: 0.75–1.00 | P: ≤0.035 | S: ≤0.040

Si: 0.15–0.35 | Cr: 0.80–1.15 | Mo: 0.15–0.25

C: ≥0.15 | Mn: ≤1.00 | P: ≤0.04 | S: ≤0.05 | Si: ≤0.40

Etid B7M:

Fòs Tansyon Minimòm: 100 KSI (689 MPa)

Fòs Sediman Minimòm: 80 KSI (551 MPa)

Elongasyon: ≥18%

Dite: HB 197–235 (maks 235)

Tretman Chofaj: Detenn ak retonbe

Ekrou 2HM:

Revantman Prèv: 150 KSI (1034 MPa)

Dite: HB 159–237

Tretman Chofaj: Detenn ak retonbe

Grade B7M se yon varyant B7 ki gen dite ba, ki fèt espesyalman pou anviwònman kote fann akòz sifid (SSC) gen risk:

Chak lòd gen trasabilite materyèl ki sètifye dapre espesifikasyon ASTM. Nou bay rapò tès usin (MTR) ak konpozisyon chimik, pwopriyete mekanik, ak dosye tretman chofaj. Enstalasyon nou an ekipe ak tès dite Brinell, machin tès tansyon, ak tès enpak pou verifikasyon kalite anndan.

Mande yon sitasyon oswa poze yon kesyon teknik sou etid ASTM A193 B7M ak ekrou A194 2HM. Nou anbake atravè mond lan ak tout trasabilite materyèl.

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Boulon asye alyaj

Kategori Pwodwi

ASTM A193 B7M Etid Doub Bout

Voye demann ou an