GB/T 17396 27SiMn Hydraulic Prop Pipe

IMRI seamless hydraulic pillar pipe utilizes 27SiMn high-strength steel to deliver exceptional structural integrity in critical mining applications. Designed as the core component of hydraulic roof support systems, it ensures reliable performance under extreme static/dynamic loads up to 10,000 kN.

Email:

sales@imristeel.com

Phone:

+86 13646172523

Product Detail

Packaging & Delivery

Product Detail

Hydraulic strut pipe is a high-strength steel pipe designed for mining support, tunneling, building support and other scenarios, featuring high compressive strength, corrosion resistance and long service life.

Quick Details

Standard:

GB/T 17396

Grade:

27SiMn

Thickness:

2.9-60mm

section shape:

Round

Outer Diameter:

Ф38-457

Place of origin:

Baotou, China(Mainland)

Function:

Support; Withstand pressure and impact

Technique:

Hot Rolled, Seamless

Certification:

API

Surface Treatmen:

According to customers request

Alloy Or Not:

length:

1-12m

Supply Ability:

( 180.0000 )Ton/Tons per year

End:

Bevel; plain

Maintenance cycle:

24-36 months

Brand:

Baotou steel

Application:

Mining Machinery; Hydraulic Equipment

Fatigue Life:

>200,000 times

Chemistry Component

Grade	Chemical composition (mass fraction) %
Grade	C	Si	Mn	Cr	Ni	Mo	Cu	Nb	RE	P	S
35	0.32~0.39	0.17~0.37	0.50~0.80	≤0.25	≤0.25	一	≤0.20	—	一	≤0.025	≤0.015
45	0.42~0.50	0.17~0.37	0.50~0.80	≤0.25	≤0.25	一	≤0.20	—	—	≤0.025	≤0.015
27SiMn	0.24~0.32	1.10~1.40	1.10~1.40	≤0.30	≤0.30	≤0.10	≤0.20	—	—	≤0.025	≤0.015
27SiMnRE	0.24~0.32	1.10~1.40	1.10~1.40	≤0.30	≤0.30	≤0.10	≤0.20	—	0.008~0.025	≤0.025	≤0.015
30CrMnSi	0.28~0.34	0.90~1.20	0.80~1.10	0.80~1.10	≤0.30	≤0.10	≤0.20	—	—	≤0.025	≤0.015
30CrMo	0.26~0.33	0.17~0.37	0.40~0.70	0.80~1.10	≤0.30	0.15~0.25	≤0.20	—	一	≤0.025	≤0.015
30MnNbRE	0.27~0.36	0.20~0.60	1.20~1.60	0.30	≤0.30	0.10	≤0.20	0.020~0.050	0.008~0.025	≤0.025	≤0.015

Tensile test requirements

Grade	Specimen heat treatment system				Tensile					Impact absorbed energy (KV₂) J	Tubes annealed condition Brinell hardness (HBW)
	Specimen heat treatment system				Tensile Strength/MPa	Lower yield strength or Specified plastic elongation strength/MPa			Post-break elongation%
	Q		N			WT (mm)
	Heating Temp ℃	Coolant	Heating Temp ℃	Coolant		≤16	>16<30	>30
	Heating Temp ℃	Coolant	Heating Temp ℃	Coolant	Not less than						not more than
35	一	一	一	一	510	305	295	285	17	一	一
45	—	—	一	一	590	335	325	315	14	一	—
27SiM	920±15	water	450±50	Water,oil	980	835			12	39	217
30CrMnSi	880±15	oil	540±50	Water,oil	1080	835			10	39	229
30CrMo	880±15	oil	540±50	Water,oil	930	735			12	71	229
30MnNbRE	880±15	wate	450±50	atmosphere	850	720			13	48	一

Packaging & Delivery

· Pipe End: Covered HDPE crash cap
· Packing: Hexagonal bundles or plain bundles not exceeding 2 tons each
· Special protection : For seamless tubes that require rust prevention, rust preventive oil or other rust preventive agents will be applied to the surface

Packaging & Shipping

· Minimum order quantity: 5 tons
· Price: FOB at Xin’gang port in Tianjin or CIF or CFR
· Payment: 30% deposit in advance, the balance against the copy of B/L; or 100% L/C, etc
· Lead Time: within 10-25 workdays normally
· Sample: Free sample is available.