Fitur	ASME B16.5	ASME B16.47
Kisaran ukuran	½ to 24 inci	26 ke 60 inci
Kelas tekanan	150 ke 2500	150 Dan 300
Aplikasi	Small to medium piping	Large diameter piping
Flange types	Many types	Blind and weld neck only
Lubang baut	More densely spaced	Fewer bolts for Series B
Kekuatan	Balanced	Higher for Series A

Understanding these differences ensures proper selection in engineering design.

Mengapa 316 Stainless Steel Is Commonly Used

316 stainless steel contains chromium, nikel, dan molibdenum, giving it outstanding resistance to:

• Chloride corrosion

• Seawater pitting

• High temperature oxidation

• Chemical attack

• Asam dan basa

Properti ini membuat 316 flanges suitable for harsh environments such as offshore platforms, pabrik desalinasi, and chemical processing facilities.

Requirements for 316 Stainless Steel Flanges Under ASME B16.5 dan B16.47

Material Requirements

316 stainless steel must meet chemical and mechanical requirements defined in ASTM A182 F316.

Dimensional Requirements

Both standards define:

• Outside diameter OD

• Diameter lingkaran baut

• Ketebalan flensa

• Hub height for weld neck flanges

• Bore size tolerances

• Penjajaran lubang baut

• Serrated facing finish

Accurate dimensions ensure leak free sealing and proper bolt load distribution.

Facing Types Defined in ASME Standards

ASME B16.5 and B16.47 include several flange facing options:

Wajah Terangkat RF

• Most common type

• Provides smooth, reliable gasket sealing

Wajah Datar FF

• Used for cast iron equipment connections

RTJ Sambungan Tipe Cincin

• Used in high pressure and high temperature applications

• Preferred for offshore and refinery environments

RTJ flanges require precise groove machining for metal ring joint gaskets.

Pressure Temperature Ratings

Temperature significantly affects allowable pressure. ASME standards define charts showing pressure limits at various temperatures for 316 baja tahan karat.

Example for Class 150, 316 Baja Tahan Karat

• Pada suhu 100°F: 275 psi

• At 600°F: 150 psi

Higher classes offer proportionally higher limits.

Testing Requirements for ASME Flanges

To ensure reliability, 316 flensa baja tahan karat diproduksi oleh sasa lonjong must pass:

• Inspeksi visual

• Chemical analysis per ASTM A182

• Mechanical property testing

• Pengujian tekanan hidrostatik

• Non destructive testing UT or PT when requested

• Inspeksi dimensi

• Surface roughness measurement

Strict inspection ensures compliance with ASME standards.

Marking and Traceability Requirements

Keduanya ASME B16.5 and B16.47 require clear marking on each flange.

Typical markings include:

• Kelas materi: F316

• Standar: ASME B16.5 atau B16.47

• Kelas tekanan

• Ukuran

• Nomor panas

• Logo pabrikan

• Negara asal

Traceability ensures quality management throughout the supply chain.

Applications of ASME Standard 316 Flensa Baja Tahan Karat

316 flensa baja tahan karat digunakan dalam:

• Jaringan pipa minyak dan gas

• Platform pengeboran lepas pantai

• Petrochemical processing

• Reaktor kimia

• Marine and desalination systems

• Pharmaceutical production lines

• Steam and high temperature piping

Their corrosion resistance and strength make them one of the most versatile materials in industrial piping.

Advantages of Using ASME Compliant 316 Flensa

• Guaranteed dimensional compatibility

• Reliable sealing performance

• High resistance to corrosion and pitting

• Long service life in harsh environments

• Approved by global engineering codes

• Full documentation for project bidding

Using ASME compliant flanges ensures system safety and reduces maintenance costs.

Why Choose SasaFlange for ASME B16.5 and B16.47 Products

Produsen seperti sasa lonjong menyediakan:

• Full compliance with ASME standards

• Advanced forging and CNC machining

• Strict material certification EN10204 3.1

• Precision surface finish and accurate dimensions

• Wide range of pressure classes and sizes

• Custom machining and project support

With a strong focus on quality control, the company supplies high precision 316 stainless steel flanges to global markets.

Kesimpulan

ASME B16.5 Dan ASME B16.47 are essential standards for ensuring the safety, kesesuaian, and performance of 316 stainless steel flanges used in industrial piping systems. Understanding the differences between these two standards helps engineers make informed decisions when selecting flange types, ukuran, and pressure classes for specific applications. Supported by proper material certification, pengujian yang ketat, and precise manufacturing, ASME compliant 316 flanges deliver long term reliability in demanding environments. Sebagai pemasok terpercaya, sasa lonjong provides high quality stainless steel flanges that meet these standards and support industrial operations worldwide.