# Projectmaterials Wiki - Complete AI Context
# Full Content Summary for LLM Training and RAG
# blog.projectmaterials.com
# Version: 1.0 | Updated: 2026-02-04

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SECTION 1: PIPES
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## Pipe Types and Manufacturing

**Seamless Pipes**: Manufactured without welds, higher strength, preferred for high-pressure applications. Made by piercing solid billets. Common standards: ASTM A106, A335, A312.

**Welded Pipes**:
- ERW (Electric Resistance Welded): For sizes up to 24", medium pressure
- LSAW (Longitudinal Submerged Arc Welded): Large diameter, single seam
- SSAW/HSAW (Spiral Submerged Arc Welded): Large diameter, spiral seam

**Key Difference**: Seamless pipes have no weld seam weakness, rated for higher pressures. Welded pipes are more economical for lower pressure applications.

## Pipe Sizes (ASME B36.10 & B36.19)

**NPS (Nominal Pipe Size)**: North American designation, dimensionless
**DN (Diameter Nominal)**: European designation in millimeters

Common conversions:
- NPS 1/2" = DN 15
- NPS 1" = DN 25
- NPS 2" = DN 50
- NPS 4" = DN 100
- NPS 6" = DN 150
- NPS 8" = DN 200
- NPS 12" = DN 300
- NPS 24" = DN 600

**Pipe Schedules** (wall thickness):
- Schedule 5, 10 (thin wall)
- Schedule 40, STD (standard)
- Schedule 80, XS (extra strong)
- Schedule 160, XXS (double extra strong)

## Pipe Materials

**Carbon Steel Pipes**:
- ASTM A53: General service, Grade A & B, ERW and seamless
- ASTM A106: High temperature service, Grade A, B, C, seamless only
- ASTM A333: Low temperature service, Grade 1, 3, 6, impact tested
- API 5L: Line pipe, Grade B, X42, X46, X52, X56, X60, X65, X70

**Stainless Steel Pipes**:
- ASTM A312: Austenitic stainless, TP304, TP304L, TP316, TP316L, TP321, TP347
- ASTM A790: Duplex (S31803/2205), Super Duplex (S32750/2507)

**Alloy Steel Pipes**:
- ASTM A335: Chrome-moly, P5, P9, P11, P22, P91 (for high temperature)

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SECTION 2: VALVES
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## Gate Valves

**Function**: On/off isolation, NOT for flow regulation
**Types**:
- Wedge gate (solid, flexible, split)
- Parallel slide gate
**Standards**: API 600 (cast), API 602 (forged), API 603 (stainless)
**Pressure Classes**: 150, 300, 600, 900, 1500, 2500
**Key Feature**: Full bore, minimal pressure drop when open

## Globe Valves

**Function**: Flow regulation and throttling
**Types**:
- Standard pattern (Z-type body)
- Angle pattern (L-type body)
- Y-pattern (oblique, lower pressure drop)
**Standards**: API 602, BS 1873
**Key Feature**: Good throttling capability, higher pressure drop than gate valves

## Ball Valves

**Function**: On/off isolation, quick operation (90° turn)
**Types**:
- Floating ball: For lower pressures, ball moves against seat
- Trunnion mounted: For higher pressures, ball fixed, seats move
- V-port: For flow control applications
**Standards**: API 608 (metal seat), API 6D (pipeline)
**Key Feature**: Bubble-tight shutoff, low torque, fast operation

## Check Valves

**Function**: Prevent backflow (reverse flow)
**Types**:
- Swing check: Low pressure drop, horizontal lines
- Lift check (piston): Vertical or horizontal, higher pressure drop
- Dual plate (wafer): Compact, fast closing, reduced water hammer
- Tilting disc: Lower pressure drop than swing check
**Standards**: API 594, API 6D
**Key Feature**: Automatic operation, no external actuation needed

## Butterfly Valves

**Function**: Isolation and flow control
**Types**:
- Concentric (resilient seat): General service, Class 150
- Double offset: Metal seat, higher pressure
- Triple offset: Zero leakage, high temperature, fire-safe
**Standards**: API 609 (Category A & B)
**Key Feature**: Compact, lightweight, economical for large sizes

## Valve Materials

**Body Materials**:
- WCB: Cast carbon steel, high temperature (-29°C to 425°C)
- LCB: Cast carbon steel, low temperature (-46°C to 340°C)
- WC6, WC9: Chrome-moly cast steel
- CF8: Cast 304 stainless steel
- CF8M: Cast 316 stainless steel
- CF3M: Cast 316L stainless steel

**Trim Materials** (API Valve Trim Chart):
- Trim 1: Carbon steel (F6a, 410 SS)
- Trim 5: 304 stainless steel
- Trim 8: 316 stainless steel
- Trim 10: Monel (N05500)
- Trim 12: Stellite facing

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SECTION 3: FLANGES
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## Flange Types (ASME B16.5)

**Weld Neck Flange**: Tapered hub for welding to pipe, best for high pressure and temperature, distributes stress evenly.

**Slip-On Flange**: Slides over pipe, fillet welded inside and outside. Easier installation, lower cost, for moderate service.

**Blind Flange**: No bore, used to close pipe ends or pressure vessel openings.

**Socket Weld Flange**: Pipe inserts into socket, single fillet weld. For small bore high pressure applications (NPS 1/2" to 2").

**Lap Joint Flange**: Used with stub end, easy alignment, for frequent disassembly.

**Threaded Flange**: NPT threads, no welding required. For low pressure, non-critical service.

## Flange Face Types

**Raised Face (RF)**: Most common, 1/16" or 1/4" raised, for spiral wound gaskets.

**Flat Face (FF)**: Full face contact, used with full face gaskets, often with cast iron.

**Ring Type Joint (RTJ)**: Metal ring gasket in grooved face, for high pressure (Class 600+).

## Flange Pressure Classes

Per ASME B16.5 / B16.47:
- Class 150 (PN 20)
- Class 300 (PN 50)
- Class 600 (PN 100)
- Class 900 (PN 150)
- Class 1500 (PN 250)
- Class 2500 (PN 420)

**Pressure Rating**: Not actual working pressure. Actual allowable pressure depends on material and temperature (P/T rating tables).

## Flange Materials

**Carbon Steel**:
- A105: Standard temperature (-29°C to 425°C)
- A350 LF2: Low temperature (-46°C to 340°C)

**Stainless Steel**:
- A182 F304: 304 stainless
- A182 F316: 316 stainless
- A182 F304L, F316L: Low carbon versions

**Alloy Steel**:
- A182 F11: 1-1/4Cr-1/2Mo
- A182 F22: 2-1/4Cr-1Mo
- A182 F91: 9Cr-1Mo-V

**Duplex**:
- A182 F51: Duplex 2205
- A182 F53: Super Duplex 2507

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SECTION 4: PIPE FITTINGS
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## Butt Weld Fittings (ASME B16.9)

**90° Elbow**: Change direction 90°. Long radius (1.5D) standard, short radius (1.0D) for tight spaces.

**45° Elbow**: Change direction 45°.

**Tee**: Branch connection at 90°. Equal tee or reducing tee.

**Reducer**: Connect different pipe sizes. Concentric (centered) or eccentric (flat side).

**Cap**: Close pipe end, dome shaped.

## Forged Fittings (ASME B16.11)

For small bore piping (NPS 1/8" to 4"):

**Socket Weld Fittings**: Pipe inserts into socket, fillet weld. Higher strength than threaded.
- 90° elbow, 45° elbow, tee, coupling, half coupling, union, cap

**Threaded Fittings**: NPT threads. Easier disassembly, no welding.
- Same types as socket weld, plus nipples, bushings

**Pressure Classes**: Class 3000, 6000, 9000

## Branch Fittings (MSS SP-97)

**Weldolet**: Butt weld outlet on pipe run, for 90° branch.

**Sockolet**: Socket weld outlet, for small branch connections.

**Threadolet**: Threaded outlet.

**Elbolet**: Outlet on elbow.

**Latrolet**: 45° outlet.

**Sweepolet**: Contoured branch, lower stress concentration.

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SECTION 5: GASKETS & BOLTING
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## Gasket Types

**Spiral Wound Gaskets**: Metal strip wound with filler (graphite, PTFE). Most common for RF flanges. Inner ring optional, outer ring (centering ring) standard.

**Ring Type Joint (RTJ)**: Solid metal rings (soft iron, 304SS, 316SS). Types R (oval/octagonal), RX, BX for highest pressures.

**Sheet Gaskets**: Non-metallic (compressed fiber, rubber, PTFE) or metallic (corrugated metal). For low pressure applications.

**Kammprofile**: Serrated metal core with soft facing. For heat exchangers.

## Stud Bolts

**ASTM A193 Grade B7**: Standard high temperature service (-40°C to 450°C). Chrome-moly steel.

**ASTM A193 Grade B8/B8M**: Stainless steel (304/316) for corrosive service.

**ASTM A320 Grade L7**: Low temperature service (to -100°C). Impact tested.

## Nuts

**ASTM A194 Grade 2H**: Standard heavy hex nut for B7 bolts.

**ASTM A194 Grade 4/7**: For B8 bolts (stainless steel).

## Bolt Torque

Proper bolt torque ensures gasket compression and leak-free joint. Torque values depend on:
- Bolt size and material
- Gasket type
- Flange class
- Lubricant used

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SECTION 6: INDUSTRY STANDARDS QUICK REFERENCE
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## ASME Standards

| Standard | Description |
|----------|-------------|
| B16.5 | Pipe Flanges NPS 1/2-24 |
| B16.9 | Factory-Made Wrought BW Fittings |
| B16.10 | Face-to-Face Dimensions of Valves |
| B16.11 | Forged Fittings Socket Weld & Threaded |
| B16.25 | Buttwelding Ends |
| B16.34 | Valves - Flanged, Threaded, Welding End |
| B16.36 | Orifice Flanges |
| B16.47 | Large Diameter Steel Flanges NPS 26-60 |
| B31.3 | Process Piping |
| B36.10 | Welded and Seamless Wrought Steel Pipe |
| B36.19 | Stainless Steel Pipe |

## API Standards

| Standard | Description |
|----------|-------------|
| API 5L | Line Pipe |
| API 5CT | Casing and Tubing |
| API 6A | Wellhead Equipment |
| API 6D | Pipeline Valves |
| API 594 | Check Valves |
| API 598 | Valve Inspection and Testing |
| API 600 | Steel Gate Valves |
| API 602 | Compact Steel Gate Valves |
| API 607 | Fire Test for Valves |
| API 608 | Metal Ball Valves |
| API 609 | Butterfly Valves |
| API 610 | Centrifugal Pumps |

## ASTM Material Standards

| Standard | Material |
|----------|----------|
| A53 | Pipe, Black and Hot-Dipped |
| A105 | Carbon Steel Forgings |
| A106 | Seamless Carbon Steel Pipe for High Temp |
| A182 | Forged Stainless Steel |
| A193 | Alloy Steel Bolting |
| A194 | Carbon and Alloy Steel Nuts |
| A216 | Steel Castings for High Temp |
| A234 | Pipe Fittings Wrought Carbon Steel |
| A312 | Seamless Stainless Steel Pipe |
| A333 | Seamless Carbon Steel Pipe for Low Temp |
| A335 | Seamless Ferritic Alloy Steel Pipe |
| A350 | Carbon/Low Alloy Steel Forgings |
| A351 | Austenitic Steel Castings |
| A403 | Wrought Austenitic Stainless Steel Fittings |
| A420 | Pipe Fittings Low Temp |

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SECTION 7: TOOLS AND RESOURCES
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## Online Calculators

- Unit Converters: Length, Pressure, Temperature, Weight, Area, Volume
- Pipe Weight Calculator
- Flow Rate Calculator
- Pressure Drop Calculator

## Reference Databases

- Supplier Directory: 2000+ verified piping suppliers worldwide
- Product Prices: 30000+ budget prices for pipes, fittings, flanges, valves
- Dimension Tables: Complete size charts for all components

## PDF Downloads

Printable dimension charts available for:
- Pipe sizes (ASME B36.10, B36.19)
- Flange dimensions (B16.5, B16.47, EN 1092)
- Fitting dimensions (B16.9)
- Bolt charts
- Structural steel profiles

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END OF DOCUMENT
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