Forged Threaded Fittings / Forged Socket Welded Fittings Product Specification

Forging
Select proper metal materials and carry out essential pre-treatment such as cutting and cleaning. Heat the metal billet to a specific temperature to boost its plastic properties and lower deformation resistance. Under the impact or pressure of a forging hammer or press, the billet undergoes plastic flow within the mold to take the desired shape (metal can deform freely in all directions under such forces). Forgings produced with specialized molds have precise dimensions. After forging, the workpiece is cooled to stabilize its shape and performance, followed by heat treatment, machining, and surface finishing to further enhance its performance and accuracy.

Mandrel Forming
Employs precision mandrels tailored to forming requirements to support workpieces during processing, ensuring stable dimensions and reducing deformation, especially suitable for shaping components with complex inner structures.

Comprehensive Size Ranges

★ Forged Threaded Fittings

Common sizes span DN15 to DN600, with outer diameters matching those of seamless steel pipes with corresponding nominal diameters. Specific dimensions are as follows:

Nominal Diameter DN	Outer Diameter
15	22mm
20	27mm
25	34mm
32	42mm
40	48mm
50	60mm
65	76mm (with 73mm available for certain types)
80	89mm
100	114mm
125	140mm
150	168mm
200	219mm
250	273mm
300	324mm
350	360mm
400	406mm
450	457mm
500	508mm
600	610mm

Forged threaded fittings are classified based on material (e.g., carbon steel, stainless steel), connection method (threaded joints), and implementation standards (such as ASME B16.11). Wall thickness generally ranges from 3 to 20mm, with specific values adjusted according to application scenarios and pressure demands.

Forged Socket Welded Fittings
Standards applicable to forged socket welded fittings include GB/T 14383-2021 and ASME B16.11, with common sizes typically up to DN100 (larger sizes are non-standard and customized based on requirements).

GB/T 14383-2021
Covers nominal dimensions of DN100 or smaller, with pressure ratings of 2000LBS, 3000LBS, 6000LBS, and 9000LBS (for steel materials).

★ ASME B16.11

Dimensions for DN15 to DN100 are as follows:

Nominal Diameter DN	Center-to-End Sizes (curved / three-thread / etc.)	Opening Outer Diameter
15	28mm / 33mm / 38mm	22mm
20	33mm / 38mm / 44mm	27mm
25	38mm / 44mm / 51mm	34mm
32	44mm / 51mm / 60mm	42mm
40	51mm / 60mm / 64mm	48mm
50	60mm / 64mm / 83mm	60mm
65	76mm / 83mm / 95mm	76mm
80	86mm / 95mm / 106mm	89mm
100	108mm / 127mm / 146mm	114mm